an attractive girl or woman who engages in anal sex.
"Hey Jon you see that girl over there?"
"Yea shes hot as hell."
"I wonder if shes a backdoor beauty."
by aka thadeaus March 20, 2006
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Anal sex.When the man penetrates the woman's anus.
I fucked Tiffany up the ass.That bitch sure loves backdoor lovin'!!
by bruce shant May 25, 2007
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the act of of titty fucking ones buttox covered in hott maple syrup then preceeding to wipe off the syrup and secretions with a pancake and eat
Chris: Hey man, how was your morning? David: It was good, me and macy made like three backdoor flapjacks. Chris: Damn man any leftovers?
by jordayler February 6, 2011
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v./n. inf(!) to unexpectedly penetrate someone's anus; often, of a heterosexual couple engaged in doggy style intercourse, when the male withdraws from the vagina, and hilariously re-inserts into the anus without prior warning.

NOT to be confused with the equally amusing Cadbury Surprise.
Betty: ... but then, as I... as I was about to... come, for some reason he pulled out... and then... *breaks down sobbing* he.. he put it... oh god! *sobs uncontrolably*
Psychiatrist 1: He gave you a BACKDOOR SURPRISE!? What a guy!!!
*hi-fives Psychiatrist 2*
Psychiatrist 2: Man, that is awesome!
by Terry Deary February 24, 2006
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Backdoor draft – Military term used to describe the current government policy of keeping troops in the military beyond their original enlistment contracts through the utilization of “stop loss orders” (keeping specific shortage job specialties such as military intelligence and aviation in) and “stop movement orders” (locking down entire units so that troops can’t leave the military or rotate out into another unit). Some troops have spent one to two years serving past their enlistment contract or retirement date.
“Man, it sucks to be SGT Johnson.”
“Why’s that?”
“He had a scholarship to UT set up but now the Army’s keeping him in for another year to send him back to Iraqistan.”
“Is he going to loose his scholarship?”
“Probably. Damn backdoor draft.”
by Trav February 10, 2005
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