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1.
When a girl's buttcheeks are sticking out past the bottom of her shorts.
"Yo Yolonduh, check out dat bitches buttdrop!!!"

"These are my special buttdrop shorts!"

"My wardrobe consists only of buttdrop shorts."

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by b00taylisho1234 March 01, 2011

Words related to buttdrop

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2.
Where the bottom of your butt touches the back of your thighs
"I got so fat that I have really bad buttdrop"
by jackie062907 December 02, 2007