Outburst

Outburst is a Quirk that is used by Ms. Joke.

The Quirk has never been seen used, but its functions have been described by Izuku. According to him, this Quirk allows Ms. Joke to forces other people around her to burst into laughter so intense that is dulls their motor skills and cognitive abilities. It is useful for incapacitating villains.

The intent her this quirk is unknown, as are its limitations.