To be in a perfect mental and physical state in which others see you doing exceedingly well.
Guy 1: "Man dude, your on your grind!"
Guy 2: " Don't even trip, I'm just gettin' started."
Term the French use that means to masturbate
Imma go into your sisters bedroom and grind my chocolate for a minute
Do you need some help grinding your chocolate? It seems like you can't get it up...
Sexual, often used in the same context as "whatever floats your boat". It means whatever turns you on. Means jacking off, or means sex.
"Babe, Whatever grinds your loins.."
Next scene: SEX
Male self stimulation. Masturbation.
Hey Harrison, you ever grind your stump?