look up any word, like blumpkin:
This term is used to describe "doggie" style sexual intercourse.

It came to be because of the weight put on the receiver's back. It is also commonly referred to as "blowing" one's back out.
Sarah, are you okay? You're walking with a limp!" "Yes, Kenneth really broke my back last night.
by Wouldyoulookatthat February 25, 2011