1. Reply to this post, and I will pick three of your icons.
2. Make a post (including the meme info) and talk about the icons I chose.
3. Other people can then comment to you and make their own posts.
4. This will create a never-ending cycle of icon squee. Whoo!
(Since you and DK only picked four icons between you, sorry, Grim, but there's only one post. ;P)
My default, yays. This has to do with one of the odder tests I've ever taken. I think the guy just didn't like grading, but he'd space "bonus" questions through his tests. One was:
40. Llamas?
A. Yes
B. Yes
C. Yes
D. Just pick letter A
Cheese-kun! :D I have a Cheese-kun now, thanks to

Cheese-kun is the actual Pizza Hut mascot in Japan. Pizza Hut must've been some major sponsors of Code Geass for all the product placement stuff there was.
The icon is from Saiyuki. Hopefully the quote is self-explanatory. I tend to cut bases for icons and then kind of sit around and stare at them till I think of something funny/pretty/deep/whatever to put on them. This is what happens.
This is (partially) all