Shyznit Share definition Flag Shyznit is a word u use wen u dont got nuttin to say Holy shiznit! O shyznit i fucn forgot my boy @ home. -my dick is the shyznit Shyznit by Brit and Clayton March 27, 2003 0 0 Get merch Get the Shyznit mug. Buy Now — $32.95 See more merch