When Stan asks Kenny what a dildo is, he replies with "It's a giant stick that goes inside the mom's v*****"
When Kyle and Stan see visitors, Kenny shouts "Oh nooo!"
After Cartman says "Or slip her the tongue", Kenny says "Or look at the cat on her feet, then touch her."
When Kenny gets fired back by the spaceship, and gets up, he says "Don't worry, I'm alright. Argh!"
Before Kenny actually dies in the episode, he says "Nope, I'm all fine. Agh!"