Stealth Grind 

When you sneak behind a random person dancing, or ideally some couple grinding on the dance floor and make spastic pelvic thrusts and other sexual gestures (i.e. ass slapping) from behind the unknowing target. Also can be equally effective and hilarious when done behind any person bending over for any reason, as in tying their shoe.

DB is stealth grinding king of the world.

Stealth Grind by Stealth Grinder August 13, 2010

StealthGrinder 

1. A completely black-clad individual who infiltrates high school dances and grinds on as many people as possible, no matter if male or female. Whether he is a hero or a villain no one knows.

"Something just pushed against my leg, but I didn't see anything. I think it was the StealthGrinder."

Come on, everyone knows there's no such thing as a StealthGri----AAAH! okay he's real.

StealthGrinder by CharliElise February 24, 2011