Outburst

Outburst (爆笑) 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 force others around her to burst into laughter so intense that it dulls their motor skills and cognitive abilities. It is useful for incapacitating villains.