when you sit so much that your ass starts to mold to the shape of the chair, creating a shelf-like appearance. commonly seen in school secretaries or robust librarians.
"damn did you see that ass when she stood up?! shes got a bad case of secretary butt, dude. that shit was like a shelf."
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Get the Bazooka Butt mug.I felt his lips press flat around my asshole, tight to my taint, then the butt chunking began and I felt my lower intestine fill with his last meal.
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Get the butt sore mug.When a football team (who are the pirates) win a game and they like it up the butt to eachother on their bus to each game that is away.
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