Cricket Green's Laugh Riddle

Listen up, you big dumb human. This 'joke' is a riddle where the answer isn't a word, but a sound! 'Hee hee, yee yee, hee-haw, hee!' That's supposed to sound like Cricket Green's laugh from 'Big City Greens', implying he's the one who's 'round, ticklish, and drove a fast car'. You probably didn't get it because you don't watch enough cartoons, dummy.