Hamster Butts

There are 19 pictures of hamster butts in a list at Sad and Useless. That at first seems odd, and then indeed sad and useless. But the more hamster butts you look at, the funnier they get. The process goes a little like this:
What's so special about hamster butts?
Well, they're cute.
Oh look, that one's funny!
Whoa, they all look alike -except they don't.
What's that hamster doing?
Man, this is weird.
But it's funny!
See if that's the reaction you have. -via Laughing Squid