do what you're good at Share definition Flag The world's greatest euphemism for masturbating. Coined by Jeff Foxworthy, of all people. They give you a plastic cup and a Playboy book, and you take it in the back room and do what you're good at! do what you're good at by uwg October 15, 2006 0 0 Get merch Get the do what you're good at mug. Buy Now — $32.95 See more merch