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!
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 September 20, 2005
Get the hang out the back of mug.by martin butters December 23, 2007
Get the hang out the back of mug.Apart from the original Richard Keys usage of the phrase, to hang out the back of something can be used as an expression of approval of something well done.
(after eating a good meal cooked by a friend) "that pasta was great, you really hang out the back of it"
by Rolfparis September 5, 2012
Get the Hang out the back of it mug.