Inbox

Inbox

(alt-text)

Rome's declaration of war against Carthage was sent from a no-reply address, so Hannibal had to cross the Alps to deliver his "UNSUBSCRIBE" response in person.

What If? is now on YouTube!
Check out the first video for the answer to
“What if we aimed the Hubble Telescope at Earth?”
and follow xkcd’s What If? The Video Series channel to be notified about each new video.