look up any word, like dirty sanchez:
 
1.
When you are listening to a song and suddenly a random girl puts her hand over your mouth and rubs her body all over yours.
Taran was at his school dance.
Taran: hey this song is pretty cool.
Alex: I'm sneak grinding you, hard.

Brian was jamming out to Eminem when suddenly!
Brian: hey this song is pretty cool.
Grace: I'm sneak grinding you, hard.
by Hadvar's pimp December 25, 2011