An expression of surprise and joy, by presumably referring to the nipples of a Babylonian god that were, for the sake of this expression, inordinately minty.
An orgasm occurring due to stimulation of the nipple; with or without additional stimulation, the term remains the same if the triggering action was nipple play.
Then he grabbed my tits and pinched my nipples; I totally had a nipplegasm.
The guy across the street who has pink yogurt lid sized nipples hanging from his man boobs that ALWAYS has his shirt off, blinding all that cross his path.
Mr Nipples is out shirtless again pulling the heads off of his roses. Good God man put on a shirt!