(V) the act of having sex in the position in which the receiving partner is laying down with back arched up, and the giving partner is entering from the posterior. (See also "face down, ass up.")
Damn, I don't care how much we been arguin, just blow my back out tonight.
The term used most often when one of your tool friends asks you to help the lift something very heavy. The term means lifting said object would cause your stones to blow out their bag from the strain of lifting said heavy object, and in turn fuck your situation all up.
Scott : Yo holmes, you think you can swing over to my crib and help me carry a 400 pound safe from my second floor to the basement?