When you catch a kid trying to steal your basketball when you're working in your garage its what you tell them you were doing when you confront them about said alleged theft.
I was busy "grinding the turtle" when you came into my cul-de-sac and tried to steal that basketball!
by Bubble Lips June 23, 2009
Having sex up against a wall with a fat girl wearing a tight girdle, the skirt of which rubs the base of your dick raw!
"Did I see you at it with Fat Annie round the back just now, Dude?" Yeah! I need ointment! I was really Grinding the Turtle!
by dickkidido February 25, 2011