Little is known about the original recording behind Cru Du Du Du, and it circulates mainly as a short soundboard clip rather than as part of a named song, film or show. Its appeal comes from the repeated du syllables, which are easy to remember, easy to imitate and easy to drop into almost any short video. Short form editors reuse it as a reaction accent, a transition sting and a joke in itself, especially in meme edits where a nonsense chant says more than a full line of dialogue would.