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A sexual action that starts off with you boning your girlfriend hard up the ass; then before you climax, you sit her ass down on the toilet and bust in either of her eyes and she says ARRRRRGH!
Last night I accidentally busted on my girlfriend's face and it got in her eye and she screamed ARRRRRRRRGH thus resembling a dirty butt pirate.

My girlfriend and I did the dirty butt pirate last night but now she needs an eye appointment.
by gsdarkdawn14 April 27, 2011
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when a person sticks his finger in is own butt then fingers a friend in the butt and laughs like a pirate while fingering his friend
I got in trouble for asking my friend if he wanted to play dirtybuttpirate
by Alex_55 May 13, 2018
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