pahtooty
Pahtooty is the giant pair of cheeks that takes up all your space. It is a rude word for your backside when it gets in your face.
@BusyMom: My pahtooty hit me on the subway because someone sat way too close. Ouch!
DM from Coach Dave: Fix your posture or that pahtooty will ruin your running speed today.
Text to Mom: I bought new shorts, but they do not fit my pahtooty at all this summer.