When a man tucks his penis and balls in between his legs so it is pointing out of the back (similar to the "goat" or silence of the lambs tucking), you then back up to a urinal, bow forward and piss out the back.
I was so drunk at the game last night that I decided to drop my pants to my ankles, turn around and do some back pissing in in the urinal.
by b4dub March 26, 2013