Ass Fusion
Fusion of such fine ass that it makes dividing by zero child's play.
Dat ass be so fine, I would like to perform ass fusion to make a child cry due to masses of asses.
Ass Fusion
The bonding or fusion of ass hair and underwear after an "accident". This occurs after sitting for a long time and the shit dries like glue. A rare experience, but can be very painful.
I had a bad ass fusion the other day when Delta lost my fucking luggage and I was stuck in the car.