The inexplicable force in some
girls that causes them to
grind on nearby objects (poles,
girls, guys, animals). Located in the hiney or in rare cases the crotch.
John: Damn
Gwen, turn down the
Grind Magnet, you just traumatized the nurses at the convelescent home!
Gwen (while Grinding on John): I know, i can't help it! It never turns off!