After repeated pounding of a girl over the course of a day your dick becomes raw from so much use.
I fucked Mandy so many times today that I have a raw dick
When the humidity in a male's trousers causes one or more sides of the sack to stick to their inner legs causing extreme discomfort. This occurrence usually results in the individual peeling the sticky sack from their leg (crossing their fingers that sap sack will not return).
Uhh, I've been sitting down for so long, I got a real bad case of sap sack