shfuckit Share definition Flag when you fuck someone up the ass and then they shit. hense the word fuck inside the word shit Johnny told Theron that he was going to shfuckit once Theron shoved his dick up Johnny's ass. shfuckit by shfuckitlova February 22, 2007 0 0 Get merch Get the shfuckit mug. Buy Now — $32.95 See more merch