Det er de vittige kommentarene Groucho Marx er mest kjent for. Noen gode eksempler er: "I could dance with you till the cows come home. On second thought, I'd rather dance with the cows till you come home.", "Behind every successful man is a woman, behind her is his wife" og "Marriage is a wonderful institution, but who wants to live in an institution?".
På YouTube finnes et utall opptak med Marx. Her er en smaksprøve:
What's My Line?