Shiznits Share definition Flag A very discreet way of saying shit.Sometimes is mistaken for away of saying something is cools. Todd: Hey we have a test today.Bob: Oh freakin shiznits!!Todd: ? I guess you studied...? Shiznits by Murielle May 5, 2009 0 0 Get merch Get the Shiznits mug. Buy Now — $32.95 See more merch