Pau grande is a Portuguese expression that literally combines the word for stick with the word for big, used in slang for a large penis. Short clips using the phrase circulate online as WhatsApp style audios and soundboard jokes, shared mainly for the shock value of saying something crude so plainly. Its association with a 13.5 inch claim turned it into a running gag about impossible size, and its 1.5 second length makes it easy to forward, replay, and drop into other jokes.