f'luffed Share definition Flag when you pass gas and a little feces lands on your underwear fart, farted, passed gas ,doo dooed, pooted when you wash a man's underwear and see that he has f'luffed. f'luffed by toypayne April 7, 2006 0 0 Get merch Get the f'luffed mug. Buy Now — $32.95 See more merch