lobster harmonica Share definition Flag A harmonica in the shape of a lobster, NOT a harmonica played by lobsters. "I'm not leavin till I get that lobster harmonica! C'mere, lobsty." - Otto, on the Simpsons episode Pin Pals lobster harmonica by Astroturd July 31, 2010 0 0 Get merch Get the lobster harmonica mug. Buy Now — $32.95 See more merch