The fine art of slipping a thumb in the anus.
Yo Jerry, I was screwing this skank from Chalmette and I gave her the Back Door Fonzie. She didn't even flinch!!
by RENO666 September 05, 2009
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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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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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"Do you know that girl?"
"Nah, but i wish i did, Beno used to go out with her and he reckons she's a Back Door Betty."
by bdbetty October 12, 2015
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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 07, 2006
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Pressing the tip of one's erect penis against a woman's anus in the hope that she'll agree to anal sex. This technique is futile 99.753% of the time, but persists due to the collective male delusion that women secretly love to be invaded in this way.
Boyfriend: (knocking on the back door)

Girlfriend: How many times do I have to tell you??? Get that thing away from there!!!
by Carl Pinkerton May 16, 2009
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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 21, 2007
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