This is similar to a cunt punt the 'art' of kicking someone so hard in the vagina your foot gets stuck. The cunt pint is where you get a pint glass bottle of milk and insert it in the woman's vagina. You then kick the vagina hard enough to shatter the bottle in effort to make the female infertile.
stranger1: hey shut up or i'm going to cunt pint you
stranger2: *twitches in pain at the thought* gaa please nooooo!!