Main Page

Explain xkcd: It's 'cause you're dumb.
Jump to: navigation, search

Welcome to the explain xkcd wiki!
We have an explanation for all 1943 xkcd comics, and only 38 (2%) are incomplete. Help us finish them!

Latest comic

Go to this comic explanation

The End of the Rainbow
The retina is the exposed surface of the brain, so if you think about a pot of gold while looking at a rainbow, then there's one at BOTH ends.
Title text: The retina is the exposed surface of the brain, so if you think about a pot of gold while looking at a rainbow, then there's one at BOTH ends.


Ambox notice.png This explanation may be incomplete or incorrect: Created by a LEPRECHAUN - Please change this comment when editing this page. Do NOT delete this tag too soon.

The sun contains 2x10^21 kg of gold.


Ambox notice.png This explanation may be incomplete or incorrect: First draft. Can't see comic while typing, so please review for any inaccuracies made while copying from memory. Do NOT delete this tag too soon.
[Megan and Cueball are walking.]
Megan: There's a pot of gold at the end of the rainbow.
Cueball: Rainbows are circles. They have no end.
Megan: Not quite!
[In a borderless panel, Megan and Cueball are off-panel, instead showing a multi-part graphic depicting what Megan is describing: a shorter cone inside a longer cone, with the longer cone with its point starting at the sun and the shorter one having its point at a mini Cueball's head, both cones joined at a circle with the bottom half of both cones dotted in the first part of the graphic]
Megan (off-panel): A rainbow is light leaving the sun, bouncing off the clouds, and converging on your eye. It's an inside-out two-ended cone.
[Megan and Cueball are still walking]
[Megan]: One end of that cone is your retina.
[Zoom out to further away, Megan and Cueball are still walking]
[Megan]: The other end is the sun - which contains quintillions of tons of gold. There's more gold in the sun than water in the oceans.
[Cueball]: So there is a pot of gold!
[Cueball]: What about leprechauns?
[Megan]: All incinerated as the sun formed. Very sad.

Is this out of date? Clicking here will fix that.

New here?

Last 7 days (Top 10)

Lots of people contribute to make this wiki a success. Many of the recent contributors, listed above, have just joined. You can do it too! Create your account here.

You can read a brief introduction about this wiki at explain xkcd. Feel free to sign up for an account and contribute to the wiki! We need explanations for comics, characters, themes and everything in between. If it is referenced in an xkcd web comic, it should be here.

  • There are incomplete explanations listed here. Feel free to help out by expanding them!
  • We sell advertising space to pay for our server costs. To learn more, go here.


Don't be a jerk.

There are a lot of comics that don't have set-in-stone explanations; feel free to put multiple interpretations in the wiki page for each comic.

If you want to talk about a specific comic, use its discussion page.

Please only submit material directly related to (and helping everyone better understand) xkcd... and of course only submit material that can legally be posted (and freely edited). Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked.

If you need assistance from an admin, post a message to the Admin requests board.

Personal tools


It seems you are using noscript, which is stopping our project wonderful ads from working. Explain xkcd uses ads to pay for bandwidth, and we manually approve all our advertisers, and our ads are restricted to unobtrusive images and slow animated GIFs. If you found this site helpful, please consider whitelisting us.

Want to advertise with us, or donate to us with Paypal?