Drum Crotch Share definition Flag When the crotch of you pant are to big and when you squat the fabric tightens and you can beat on it and play it like a drum. Sales clerk: How did those fit you? Shopper: The crotch is to big. I have drum crotch. Drum Crotch by Ewhaley December 16, 2011 0 0 Get merch Get the Drum Crotch mug. Buy Now — $32.95 See more merch