An explanation of a brutal dunk in basketball that involves the dunker to drag their nuts across the face of the person being dunked on. Usually an unexpected dunk to finish off a game or to outright disrespect the opponent.
Yammed on is the saying when you slam it down (dunk) on an individual in the sport of basketball and they get a full mouthful of your fat, warm, pulsing, throbbing, palpitating cock.