Funtcuck Share definition Flag A person who is so awful that they have made you mess up your speech and/or texting Person 1: "Have you talked to Becky?" Person 2: "Yeah man, she's such a fucking funtcuck!" Funtcuck by G-Falls fan! June 12, 2018 0 0 Get merch Get the Funtcuck mug. Buy Now — $32.95 See more merch