Knock the back out of

To do a chick doggie style and then all of a sudden pull a "wangthorpe" and sneak your johnson into her bunghole!
Back in 2004, I tried to knock the back out of Bev!
by shoesincan November 29, 2012
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Taking a shiznazzle. Dropping the Cosby's off at the pool. Firing off a missle. Pinching a loaf. Breaking one off. Pooping. Shitting. A thick fart.
Oh snap, I went to toot and accidentally pushed the snake out the back door.
by bt March 05, 2003
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Blew my back out

When a girl goes for years or even her whole life thinking that she's had the best sex of her life but then you come along and blew my back out
Onlytonyd blew my back out. My body physically couldn't handle no more but my mind doesn't stop wanting it.
by Onlytonyd January 11, 2017
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Blow your back out

To fuck someone so good, they can't walk for a couple of days. Hence their back is blown out.
Boy: Damn, girl, I can blow your back out
Girl: Um, I don't think so, I have a soccer game in the morning and I'd actually like to walk.
by BritneyLee09 October 19, 2008
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beat her back out

Keisha has a fat booty. You already know I had to beat her back out.
by Mr Decatur September 07, 2017
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beating her back out

To engage in sexual activity, usually in what is often referred to as "doggy-style," in a somewhat violent manner as to cause much volume from your victim, but much pleasure for both parties.
She screamed aloud as she lost her hip control while I was beating her back out
by Mr. P March 01, 2004
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