You sneak up behind an attractive female with ninja-like skill and pop a feel on her. When she turns around to see who did it, you are already long gone with the use of your ninja reflexes.

It starts off with a girl agreeing to let you slap her bare ass. It gets fun when you then proceed to tickle her kooch a bit, she jumps up a little, and then you slap her ass with a vengeance. Often times she will get upset and you may have to make a quick exit.