A fork of Rural Dictionary
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!