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Is when you put someone in a half nelson, finger their butthole, give them a fish hook after you have done so and the to proceed with anal sex while making noises of the animal of your choice.
Bitch got out of line, so I Roofus Coopered her ass.

I Roofus Coop'd the slut up so she couldn't get away.

You can't have a party with The Roofus Cooper.
by The Angry Green Bastard October 11, 2011