Fingering or giving a hand job to someone by putting your hand down the back of their pants while they are sitting, far enough to where the hand extends to or beyond the crotch on the other side.
While sitting in the stands at the Bills game, I gave my girl a Buffalo Hand Warmer, because we'reclassylike that.
A little known sexual technique in which a man gets down on all fours while his partner (man or woman) proceeds to stroke his penis from behind in a downward motion similar to milking a cow while simultaneously fisting the man on all fours.