noun. When engaging in sexual activity with a particularly flexible
girl (gymnast, ballerina, etc.), lift the
girl's hips and push them directly over her face, so that her knees are alongside both sides of her head. By then penetrating her vaginally from the other side, there will be unavoidable scrotal slappage to the face. In this way, the testicles are like small fists punching a punching
bag, and her face is like said punching
bag. When performed at a rapid tempo, can be referred to as the speed bag. Note, this move becomes much easier to pull off when the female has great flexibility or the male has really droopy
balls.
After finding out that the
girl sitting next to him at the bar was a yoga instructor, Franklin's first thought was that he would take her home and have a shot at the punching
bag.
OR
As Bonnie was being slapped repeatedly in the face by Herman's testicles, she protested, "Hey! Easy there! What do I look like? A punching
bag?!" Herman responded, "Bingo."