Poop-shit Share definition Flag adj. Similar to the word "shit" used by anyone who thinks something is not going to good, only more immature. "Poop-shit, I just got an 'F' on my test." "My girlfriend just dumped me. POOP-SHIT!!" Poop-shit by K-Rem May 1, 2007 0 0 Get merch Get the Poop-shit mug. Buy Now — $32.95 See more merch