Sack daps Share definition Flag The act of tapping one's scrotal sack against another male's, in a gesture of respect or "props". Usually only seen amongst "bros" at social events such as fraternity parties. "Holy shit bro, I can't believe you hooked up with that nasty swamp monster. SACK DAPS!!" Sack daps by P-Mundi February 9, 2010 0 0 Get merch Get the Sack daps mug. Buy Now — $32.95 See more merch