The girl's did a rating on the cutest boys in class, and Kyle was voted the ugliest boy, meaning Cartman was above Kyle.

Cartman: I'm hotter than Kyle! I'm hotter than Kyle!

Kyle: I'm last?... Last?...

Stan: Dude, it's just a stupid list, remember?

Kyle: I got voted the ugliest boy in the whole class?....

Stan: Who cares what dumb girls think, right?

Kyle: Looks at the ground, holding back tears ....