The act of one being a douche bag by slapping your or another's lower back. By far this is one of the worst pains one can experience. To execute correctly one must....
1. Sneak up on a person
2. Locate there lower back ( right above their ass crack )
3. Slap vigorously to piss off the "slap"ie
Note: most effect when aiming for the fat deposits located near the love handle area.
- Yo did you see how pissed off JJ got when I Jman slapped him?
- Yea, your a douche bag.
- The Jman slap is so sick and should be spread around so I get famous.
- That would be cool, but your still a douche bag.