To insert your penis into a womans anal cavity. In other words, To Fuck a Bitch in the Ass.
I was knockin it down with Shoniqua last night, dawg.

Did she let you P in da Butt?

You know it.
by To- dawg October 3, 2006
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To fuck a bitch in the ass and slam her head on the the bed frame causing it to fracture, then buying her a helmet for christmas
did you here mrs culnen got a P in da Butt Suprise
by culnen January 7, 2008
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