SHITTY CHIN Share definition Flag when you perform anal sex on a girl, then once finished you go down on her and she shits on your chin. damn it bitch, you shat on my chin now i've got a shitty chin SHITTY CHIN by festunga May 9, 2007 0 0 Get merch Get the SHITTY CHIN mug. Buy Now — $32.95 See more merch