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1.
When a man has sex with someone from behind implying anal sex, although it can also mean regular sex Doggy Style.
I bust in on them and there he was hanging out the back of her.

Dave: Crikey mate look at that piece over there
Alan: Golly Gosh I'd love to hang out the back of that!
by Jack T August 30, 2005

Words related to hang out the back of

fuck nail plough rag shag
 
2.
to have casual sex with someone not close. not complimentary term for making love.

"didn't you hang out the back of some bird last night"
by martin butters November 21, 2007