7upFuck Share definition Flag when you are shagging a girl and then stop to pour your lemonade into the vagina and stuck her fanny to get a nice flavor of pussy. "Emily's fanny tasted PENG yesterday cause of that 7upFuck." 7upFuck by Catnipboss January 20, 2017 0 0 Get merch Get the 7upFuck mug. Buy Now — $32.95 See more merch