Coringa de camisola circulates online as a Portuguese-language meme sound built around the simple joke in its title, which translates to the Joker is in a nightgown. The exact original source is not widely documented, so the clip is best known through shares, reposts and soundboard use among Brazilian and Portuguese-speaking users. Its humor relies on shared recognition of the Joker as a dramatic figure, which makes the sleepwear detail feel even more out of place. Short Portuguese phrases like this often spread as reaction audio for edits, group chats and comic dubs.