1. One who commandeers a crew to explore undiscovered asshole and surrounding regions of the anal cavity and pillage any nearby ships abundant in rich, exquisite ass ; skilled in the activity of illegal trade of stolen ass or booty. Favorite activities among these vicious scoundrels include the popular sport of penis fencing and polishing the captain's wooden plank.

2. One who has an obsession with ass hole of some sort.
ARRRR! AHOY MATIES! Come, we have a long journey ahead of us. We must capture Captain Seaman's lost treasure of tropical arse! ARRR!

Captain! I believe we can't sail through the Storm of Diarrhea. We must sail west, otherwise we ass pirates may not live to see the light!

LAND HO! I see it! Over there! Those two hills that are very close to each other! ARRR! Alas, we have made it lads, we have found the arse we set sail to discover! I be proud of being an ass pirate! ARRR!!

Nathanial: Come on babe. Let me insert my corn on the cob into your fudge tunnel of love.
Jocelyn: No! Just fuck my pussy. I don't like it up the butt.
Nathanial: Please! I beg you. I just have a preference for tight spaces.
Jocelyn: That's it! I have had it. All you ever do is have butt sex with me. You never want my juicy pussy. We are finished! Nathanial, you truly are an ass pirate!
by superpooper June 16, 2008
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Someone who plunders, pilages and otherwise befoulds any and all ass.
"luke i cant believe you banged that fatty your such an ass pirate"
by Swash Buckle the Ass Pirate February 10, 2006
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One who sails the seven seas in search for the best booty.
"Garrrr I be an ass pirate!"
"Shut the hell up Captain Fucktooth"
by kinnykinny January 1, 2006
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Joe Stortz or seeking out of another mans asshole for a great amount of pleasure.
Joe Stortz had sex with 50 other man!!! DAMN he is an ass pirate.
by Mike Jackson April 2, 2005
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somebody who steals ones ass virginity without concent or free will
shane is a very skilled ass pirate
by shit bag February 6, 2006
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Ass pirates are known for plundering ass. They are the guys that you hate. They are usually chauchies and harbour a sick obsession with booty, fashion, Diesel Clothing, dance music, their hair, and showing man cleavage, and expensive beer. They are the scourge of rad people everywhere. Be warned for ass pirates are crafty and can pretend to be normal people. Look out for feigned interest in obvious popular culture. For example: Hiding their love of Enrique by pretending to like The Doors. Some famous ass pirates are Brown-Beard, Dirty Sanchez, and Shawn.
Note: Does not apply simply to gay dudes. Any guy you don't like can be an ass pirate.
Hey there's that Shawn guy! What an ass pirate!
Hey I hear that ass pirate Shawn sacked the Brown Pearl last night!
Dude: Hey what are you watching?
Ass Pirate: Fashion television.
Dude: You're an Ass Pirate!
Ass Pirate: (Brushes long, flowing hair out of fake 'n baked face)
Dude: Do up some more buttons on your shirt J-Lo!
by The Dude February 4, 2005
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The act of putting a phalic object in the asshole of another man by force, usually the target of the ass pirate is being raped.
Yarr, that ass pirate swabbed his poop deck.
by CRAZINS December 3, 2007
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