"When you fart, brain cells fly out of your butt!"
But there's more, as we shared a ride home from a visit to friends', Goofgirl and the DS engaged each other in the inevitable round of fart discussion, which ended up something like this:
DS: I've got your nose, I've got your nose!
Goofgirl (menacingly): Fabric! Fabric! Fabric!
Luckily, before we wandered off into an entirely Daliesque conversation, they began discussing how Goofgirl was going to vomit at camp the next day, and DS would have to come and clean it up. Well, variety is the spice of life, they say.