Alice and Bob - 177 | xkcd

Creator

xkcd.com/177/

LINE Facebook X Tumblr Reddit

Report

Want to support this Creator? Get the app for exclusive features

TOP

Barrel - Part 1

Pettit Trees

Island (sketch)

Landscape (sketch)

Blown apart

Irony

Girl Sleeping (sketch)

Red spiders

Serenity is coming out tomorrow

Pi Equals

Barrel - Part 2

Poisson

Canyon

Copyright

Just Alerting You

Monty Python — Enough

What If

Snapple

George Clinton

Ferret

Kepler

Barrel - Part 3

T-Shirts

Godel, Escher, Kurt Halsey (Long)

Barrel - Part 4

Fourier

Meat Crereals

Elefino

Hitler

Donner

Barrel - Part 5

Pillar

Self-reference

Flowers

Sheep

Scientists

Hyphen

Apple Jacks

Bowl

Light

Old Drawing

Geico

Red Spiders 2

Love

Schrodinger

Secrets

Counter - Red Spiders

Found

Want

Penny Arcade

Malaria

Secret Worlds

Hobby

Science

Useless

The Cure

Wait For Me

Why Do You Love Me?

Graduation

Super Bowl

Stacey’s Dad

Valentine - Karnaugh

Valentine - Heart

Solar Plexus

Banter

Abusive Astronomy

Nerd Girls

Five Thirty

Pillow Talk

Guitar Hero

In the Trees

Classhole

Zeppelin

Su Doku

Curse Levels

Familiar

Bored with the Internet

Garfield

Iambic Pentameter

My Other Car

Attention, shopper

Frame

Katamari

National Language

Paths

Digital Rights Management

Velociraptors

Escher Bracelet

Gravitational

Jacket

Pwned

Sunrise

Jeremy Irons

The Sierpinski Penis Game

Mail

A Simple Plan

Fall Apart

Binary Heart

Family Circus

Laser Scope

Back to the Future

Moral Relativity

Find You

Parallel Univers

Wright Brothers

Snakes on a Plane! 2

M.C. Hammer Slide

Spoiler Alert

Clark Gable

Firefox and Witchcraft - The Connection?

Baring My Heart

Riemann-Zeta

Computational Linguists

Meerkat

City

Pong

50 Ways

Worst Band Name Ever

Dating Service

Balloon

Quirky Girls

Centrifugal Force

#124 $Blogofractal$

Marketing Interview

Red Spiders Cometh

The Fast and the Furious

dPain over dt

Content Protection

Julia Stiles

Fans

Music Knowledge

The Raven

Myspace

Substitute

Science Fair

Dreams

Pointers

I Have Owned Two Electric Skateboards

Delicious

Parody Week: Achewood

Parody Week: Megatokyo

Parody Week: TFD and Natalie Dee

Parody Week: A Softer World

Parody Week: Dinosaur Comics

Join Myspace

A Way So Familiar

Mispronouncing

Sandwich

Grownups

Mario

Hamster Ball

Cryptography

Beliefs

Commented

Filler Art

Six Months

Boombox

Penny Arcade Parody

Accident

Angular Momentum

Donald Knuth

Playing Devil's Advocate to Win

Turn Signals

Misusing Slang

Nihilism

Reverse Euphemisms

Words that End in GRY

Turn Back

String Theory

Skateboarding is Not a Crime

Movie Seating

That's What SHE Said

Automatic Doors

Before Sunrise

Alice and Bob

Not Really Into Pokemon

e to the pi times i

Canada

Interblag

Nash

Snacktime Rules

Matrix Transform

Wikifriends

Console Lines

The Familiar

Reload

Exercise

IPoD

Lojban

Working for Google

The Perfect Sound

Penises

Map of the Internet

Command Line Fu

Ninja Turtles

Perspective

Right-Hand Rule

Bill Nye

Christmas GPS

YouTube

Hallucinations

America

Candy Button Paper

Reno Rhymes

What xkcd Means

Regular Expressions

Kayak Kayak

90's Flowchart

Hamster Ball Heist

Brain

Ghostbusters Marathon

The Problem with Wikipedia

Letting Go

Romantic Drama Equation

e to the pi Minus pi

Nintendo Surgeon

Blanket Fort

Philosophy

Random Number

Small Talk

Valentine's Day

Lisp

Open Source

Swingset

Color Codes

Resonance

Graffiti

Hamiltonian

Cat Proximity

Chess Enlightenment

A New CAPTCHA Approach

Escape Artist

Kite

Collecting Double-Takes

Keyboards are Disgusting

Pet Peeve #114

Blagofaire

Dream Girl

Battle Room

The Difference

Appropriate Term

Tabletop Roleplaying

Floor Tiles

Labyrinth Puzzle

Factoring the Time

Hypotheticals

Chess Photo

Snopes

CD Tray Fight

Escalators

Highway Engineer Pranks

Comic Fragment

Subjectivity

Online Communities

Code Talkers

Conspiracy Theories

Clichéd Exchanges

The Glass Necklace

Regarding Mussolini

IN UR REALITY

CertaintyThe

Choices: Part 1

Choices: Part 2

Choices: Part 3

Choices: Part 4

Choices: Part 5

TCMP

Merlin

Powers of One

Linux User at Best Buy

Electromagnetic Spectrum

With Apologies to The Who

Thoughts

Fixed Width

Long Light

Black Hat Support

Pickup Lines

Librarians

Online Package Tracking

Organic Fuel

Projection

Tape Measure

Wikipedian Protester

All Your Base

NP-Complete

Elevator

Alone

Fucking Blue Shells

Dignified

goto

RTFM

Bookstore

DNE

Tony Hawk

Lisp Cycles

Tesla Coil

Aeris Dies

Limerick

Names

Compiling

Nighttime Stories

Rule 34

Orphaned Projects

Excessive Quotation

Interesting Life Interesting Life

Shopping Teams

Commitment

Action Movies

With Apologies to Robert Frost

Insomnia

Dating Pools

Braille

Loud Sex

That Lovin' Feelin'

Nostalgia

Engineering Hubris

28-Hour Day

Thighs

Pix Plz

Ballmer Peak

A-Minus-Minus

Effect an Effect

Exploits of a Mom

Eggs

Turing Test

Indecision

Photoshops

Gyroscopes

Getting Out of Hand

Wasteland

Mattress

Priorities

Post Office Showdown

Future

Classic

Fight

1337: Part 1

1337: Part 2

1337: Part 3

1337: Part 4

1337: Part 5

Diet Coke+Mentos

Brick Archway

Success

Network

Trolling

Far Away

Python

Startling

Couple

Nerd Sniping

Files

Loud Party

Rock Band

Writers Strike

Christmas Back Home

Blade Runner

Reset

Responsible Behavior

Slides

Your Mom

Fandom

Bass

Dangers

Redwall

Compiler Complaint

To Be Wanted

The Data So Far

Journal

Pod Bay Doors

Bug

Journal 2

Real Programmers

Forgetting

Mobius Battle

Trebuchet

Helping

The Drake Equation

How it Works

Duty Calls

Advanced Technology

Fuck Grapefruit

Keeping Time

Nightmares

Anti-Mindvirus

Anti-Mindvirus

Ultimate Game

Kilobyte

Morning

The Ring

Unscientific

Tap That Ass

Travelling Salesman Problem

Important Life Lesson

Large Hadron Collider

1,000 Miles North

Convincing Pickup Line

Journal 3

Venting

Cheap GPS

Overqualified

Electric Skateboard (Double Comic)

Math Paper

Techno

Startled

New Pet

Mistranslations

Restraining Order

Zealous Autoconfig

The Man Who Fell Sideways

Stove Ownership

Forks and Spoons

Jealousy

Making Hash Browns

A Better Idea

Finish Line

Security Holes

Fortune Cookies

Geohashing

Bad Timing

Starwatching

Fantasy

Every Damn Morning

Delivery

Journal 4

Journal 5

xkcd Goes to the Airport

Purity

How it Happened

SUV

Internet Argument

Thinking Ahead

Road Rage

Babies

xkcd Loves the Discovery Channel

Know Your Vines

Macgyver Gets Lazy

I Am Not Good with Boomerangs

In Popular Culture

Too Old For This Shit

Good Morning

Things Fall Apart

The Sea

Impostor

Mission

Upcoming Hurricanes

Rewiring

Hats

Cautionary

Frustration

Regrets

Holy Ghost

Paleontology

Google Maps

Freemanic Paracusia

Voting Machines

RBA

Quantum Teleportation

Moving

X Girls Y Cups

Fetishes

Improvised

The End is Not for a While

Aversion Fads

House of Pancakes

Still Raw

Turn-On

Further Boomerang Difficulties

One-Sided

Typewriter

The Staple Madness

Tones

Spore

Listen to Yourself

Height (Large)

Fiction Rule of Thumb

Flash Games

Depth

I am Not a Ninja

Numerical Sex Positions

Steal This Comic

Going West

Morning Routine

Scrabble

Actuarial

Secretary: Part 1

Secretary: Part 2

Secretary: Part 3

Secretary: Part 4

Secretary: Part 5

Scantron

Election

Faust 2.0

Dark Flow

Terminology

Legal Hacks

A Bunch of Rocks

Theft of the Magi

Experimentation

Drapes (READ BIO.)

Induced Current

Egg Drop Failure

Sleet

Alternate Currency

Friends

Simultaneous

No One Must Know

Wood Chips

Marshmallow Gun

Flow Charts

11th Grade

Cuttlefish

2008 Christmas Special

Google Trends

Decline

Party

I Know You're Listening

Converting to Metric

Keynote

Windows 7

Sledding Discussion

I'm An Idiot

Contingency Plan

Piano

Laptop Hell

Genetic Algorithms

It Might Be Cool

Space Elevators

Ducklings

Security

Boyfriend

Base System

TED Talk

Cover-Up

Sierpinski Valentine

Pep Talk

Neutrality Schmeutrality

Music DRM

Simple

Kindle

Westley's a Dick

Density

Etch-a-Sketch

Etch-a-Sketch

Pirate Bay

Not Enough Work

Two Mirrors

Alternative Energy Revolution

Students

1000 Times

No Pun Intended

Lithium Batteries

Well

Parking

Fermirotica

Crossbows

Security Question

Matrix Revisited

Urgent Mission

Well 2

Borders

New Car

Can't Sleep

Together

Parental Trolling

Swine Flu

Tag Combination

Packages

The Race: Part 1

The Race: Part 2

The Race: Part 3

The Race: Part 4

The Race: Part 5

Brakes

CNR

Unsatisfied

Outreach

Mission to Culture

Crime Scene

Pep Rally

Designated Drivers

Papyrus

Troll Slayer

Drama

Voynich Manuscript

Period

Android Girlfriend

Latitude

Addiction

Po*n

Apocalypse

Android Boyfriend

Game Theory

Overstimulated

Idiocracy

Qwertial Aphasia

Extrapolating

Cutting Edge

2038

Form

Tab Explosion

Sheeple

Disaster Voyeurism

Estimation

Threesome

Woodpecker

Avoidance

Lease

Understocked

Asteroid

Supported Features

Wings

Superlative

Haiku Proof

Oregon

Branding

Collections

Newton and Leibniz

Tech Support Cheat Sheet

Psychic

Skins

Anatomy Text

Suspicion

Blockbuster Mining

Date

Locke and Demosthenes

Brontosaurus

Scribblenauts

Lincoln-Douglas

Tornado Hunter

Free

Creepy

Ohm

Surgery

RPS

Conversations

Scary

Fall Foliage

Static

Nowhere

Bag Check

More Accurate

So Bad It's Worse

Nachos

Climbing

October 30th

Movie Narrative Charts

Orbitals

Lego

Sympathy

Two-Party System

iPhone or Droid

Sagan-Man

Academia vs. Business

Prudence

Silent Hammer

SkiFree

Pandora

Experiment

Spinal Tap Amps

Stephen and Me

Suggestions

The Sun

Natural Parenting

Revolutionary

Abstraction

Asshole

Researcher Translation

Christmas Plans

December 25th

Gravity Wells (Huge)

Force

Science Montage

We Get It

G-Spot

Admin Mourning

Dimensional Analysis

Self-Description

FIRST Design

Semicontrolled Demolition

MicroSD

Dirty Harry

Children's Fantasy

Retro Virus

Spirit

Strip Games

Tensile vs. Shear Strength

You Hang Up First

Trimester

Complexion

Science Valentine

Snow Tracking

Honor Societies

Principle of Explosion

Devotion to Duty

Freedom

Joshing (announcement!!!)

S*x Dice

I Am

Collatz Conjecture

Seismograph

Single Ladies

GeoIP

P*rn For Women

Numbers

Time Machine

Furtive

The Flake Equation

Brain Worms

Recipes

Flatland

Computer Problems

Seismic Waves

Hell

Literally

Seat Selection

Trade Expert

iPad

Laser Pointer

Circuit Diagram

Desert Island

HDTV

Eagle

Outbreak

Floor

Cemetery

Yogurt

Incision

Malamanteau

The Tell-Tale Beat

Blogging

Campfire

Infrastructures

Walkthrough

Dyslexics

Birth

Geeks and Nerds

Worst-Case Scenario

Study

Book Burning

Swimsuit Issue

Phobia

Southern Half

Dependencies

Interdisciplinary

Public Opinion

Toot

Raptor Fences

3x9

Moria

DFS

Analogies

Workaround

One Two

Dilution

Green Flash

Temper

1996

War

All the Girls

Period Speech

Frogger

University Website

Atheists

Savannah Ancestry

Still No Sleep

Pore Strips

Scheduling

Anxiety

Sample

Ahead Stop

Desecration

I Don't Want Directions

Falling Asleep

Open Mic Night

Exoplanets

Orbiter

The Carriage

Showdown

Control

Leaving

Password Reuse

Physicists

Inside Joke

Conditional Risk

Bad Ex

debian-main

Adjectives

Stephen Hawking

Beautiful Dream

Golden Hammer

Online Communities 2 (Huge)

Airfoil

Pumpkin Carving

Paradise City

Tech Support

Connected

The Economic Argument

Los Alamos

Constructive

Starlight

Glass

One-Liners

Diode

Applied Math

Mutual

Illness

Five-Minute Comics: Part 1

Five-Minute Comics: Part 2

Five-Minute Comics: Part 3

Guest Week: Jeph Jacques (Questionable Content)

Guest Week: David Troupes (Buttercup Festival

Guest Week: Bill Amend (FoxTrot)

Guest Week: Jeffrey Rowland (Overcompensating)

Guest Week: Zach Weiner (SMBC)

My Business Idea

Positive Attitude

Arsenic-Based Life

Genetic Analysis

Weather Radar

Tic-Tac-Toe

Convincing

Wikileaks

Tree (Christmas Comic!)

Sickness (Read Description)

Coupon Code

Incident

Explorers

Serious

Audiophiles

Mark

Misconceptions

Good Code

Modern History

Dental Nerve

Stingray Nebula

Complex Conjugate

World According to Americans

Local g

Consecutive Vowels

Learning to Cook

1999

Trochee Fixation

Archimedes

Milk

Never Do This

Wisdom Teeth

Let Go

Major in the Universe

Flying Cars

Nanobots

Compass and Straightedge

Herpetology

Nolan Chart

Server Attention Span

Advertising

Charity

Fairy Tales

FPS Mod

Time Management

2009 Called

Trapped

Beauty

Model Rail

Lamp

Headache

Probability

Significant

Rogers St.

Recycling

Craigslist Apartments

Future Timeline

Heaven

Turtles

Etymology

Movie Ages

Null Hypothesis

65 Years

Progeny

Teaching Physics

Marie Curie

Elevator Inspection

Chain of Command

Number Line

Religions

Temperature

Darmok and Jalad

Extended Mind

Sports

Homeownership

Advertising Discovery

Ages

The Cloud

Worst-Case Shopping

Permanence

Magic School Bus

Manual Override

Core

Ice

Connoisseur

Unpickable

Hofstadter

Google+

Tween Bromance

YouTube Parties

Delivery Notification

Fight Club

Strunk and White

3D Printer

Cell Phones

Time Vulture

Standards

Mimic Octopus

Speculation

Days of the Week

Lanes

CIA

Tattoo

Mac/PC

Missed Connections

Password Strength

TornadoGuard

T-Cells

Oversight

Depth Perception

Juggling

Empirical

Hurricane Names

I'm Sorry

[PLACEHOLDER EPISODE]

[PLACEHOLDER EPISODE 2]

Family Decals

Investing

File Transfer

Mystery Solved

Working

Stud Finder

1 to 10

Chin-Up Bar

Neutrinos

Sharing

Development

Hotels

Caroling

Subliminal

Eternal Flame

The Corliss Resolution

X11

Dorm Poster

Elements

Jet Fuel

Prairie

Everything

Delta-P

The Important Field

A Alternative Literature

November

MTV Generation

The General Problem

Occulting Telescope

Sail

Map Projections

Citogenesis

Wisdom of the Ancients

Money

P*rn Folder

Set Theory

Privacy

Space Launch System

Percentage Points

Drinking Fountains

Potential

Tradition

Cryogenics

Plastic Bags

Phantom Menace

Mnemonics

Advent Calendar

Coinstar

Making Things Difficult

Wait Wait

2012

Cougars

1000 Comics

AAAAAA

Game AIs

Adam and Eve

Batman

SOPA

Sloppier Than Fiction

Sustainable

Suckville

Sigh

Etymology-Man

Baby Names

Wrong Superhero

Wake Up Sheeple

Car Problems

Kerning

Valentine Dilemma

Backward in Time

Good Cop, Dadaist Cop

First Post

Orion Nebula

Business Plan

So It Has Come To This

Late-Night PBS

Error Code

Tumblr

Compare and Contrast

Pickup Artist

Communication

Drawing Stars

Keyed

s/keyboard/leopard/

Networking

Formal Logic

Cadbury Eggs

Reviews

Umwelt (1 Year Anniversary Comic)

Fountain

RuBisCO

Lakes and Oceans

Whites of Their Eyes

Never

Ablogalypse

Romney Quiz

Constraints

Skynet

Approximations

Emotion

Bookshelf

Forgot Algebra

Visited

Every Major's Terrible

Ten Thousand

The bacon

Kickstarter

Felidae

Klout

Old-Timers

Bel-Air

Crowdsourcing

EST

Budget News

Kill Hitler

Front Door

Shoes

Laundry

Pressures

Swiftkey

Alphabet

Words for Small Sets

Exoplanets

Seventies

Weekend

Moon Landing

Warning

Groundhog Day

Home Organization

Knights

United Shapes

Visual Field

Argument Victory

Geology

Writing Styles

Server Problem

ContextBot

Eyelash Wish Log

Cirith Ungol

Five Years

Internal Monologue

Formal Languages

Curiosity

Michael Phelps

Forget

Interview

Crazy Straws

Clinically Studied Ingredient

A Hypochondriac's Nightmare

Tuesdays

Vows

Sketchiness

Fastest-Growing

Nine

Feathers

License Plate

ADD

Sports Cheat Sheet

Cautionary Ghost

Refrigerator

Click and Drag

Premiere

Think Logically

Killed in Action

Metallurgy

Sky

Traffic Lights

My Sky

Microsoft

Undoing

Blurring the Line

Identity

Electoral Precedent

The Universal Label

Law of Drama

Objects In Mirror

Epsilon and Zeta

Congress

Fifty Shades

Cell Number

Poll Watching

Math

Frequentists vs. Bayesians

Up Goer Five

Logic Boat

Arachnoneurology

Broken Mirror

RTL

Heatmap

Rubber and Glue

Calendar of Meaningful Dates

Two Years

Coverage

Location

Tags

Sky Color

Honest

Evolving

Nothing to Offer

Broomstick

Instagram

Tests

Communion

Proof

Resolution

Kolmogorov Directions

Conditioning

Sick Day

Rubber Sheet

Countdown

Drop Those Pounds

Hand Sanitizer

Log Scale

Debugger

Home Alone

Amazon

Argument

Star Trek into Darkness

tar

Expedition

Bridge

Perl Problems

Workflow

Steroids

App

Moving Sidewalks

Those Not Present

Time Robot

Pickup Artists

ISO 8601

Virus Venn Diagram

PGP

Rembrandt Photo

Rose Petals

Circumference Formula

Ineffective Sorts

Bumblebees

Aspect Ratio

Bonding

Voyager 1

Time

The Past

Humming

Externalities

Stratigraphic Record

Flowchart

Subways

All Adobe Updates

Geologist

Silence

Authorization

Integration by Parts

Girls and Boys

Time Machines

Detail

Is It Worth the Time?

Einstein

AirAware

Footnote Labyrinths

Encoding

I'm So Random

Birds and Dinosaurs

Interstellar Memes

Combination Vision Test

Geoguessr

Insight

Sticks and Stones

Cells

Doors of Durin

Reports

Hipsters

Nomenclature

Pastime

Dwarf Fortress

Council of 300

Ice Sheets

Balloon Internet

#177

Subscribed
to your list

Unsubscribed
for your list

You can subscribe up to 500 CANVAS series.

BOOKMARK

TheXKCD

Enjoyed reading?
Share this comic now.

Having trouble with slow networks?

Download stories on your phone and read offline!

Go to the WEBTOON app