someone who has never been crammed up the ass before.
Raf is not back door virgin after being in jail with Bubba for 5 years.
by Cyber Ghost March 29, 2004
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In sports betting, a back door cover occurs when the team you wagered on covers the spread in the last minutes of the game. Often times this happens when the actual game is a blow out, yet the spread or line of the game is still at play.
The Giants kicked a late field goal to give me a back door cover. They lost by 10, but covered the 12 point spread.
by Milt Deezy April 27, 2007
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All good girls take it up the arse. If she's not a backdoor betty she's no lady.
by The big G March 23, 2004
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A severe case of diarreah. This terms was used many years ago. The expression came from having to trot or run out the back door to the outhouse.
I got a case of the back door trots after eating those beans last night.
by jmitchelljefferies July 8, 2006
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A term for administering rough anal sex, usually to a ass virgin.

A favourite move of the notorious ladies man 'Ibby', who is believed to have coined the phrase.
Example:

That bird won't look so high and mighty when I bash the back doors in on it
by The Spike February 22, 2007
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the man that some ones wife is seein on the side. usualy came to the back door to avoid any other house wives seein him.
jimmy the pool boy is my back door man
by jojo the flying monkey January 5, 2004
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A phrase shouted by angry philly teens and disgruntled commuters when the SEPTA bus drive for gets to open the back door of the bus.
Bus driver: *opens front door*
Disgruntled commuter: “back door, dickhead

Bus driver: Ma bad
by Angry_philly_teen October 9, 2019
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