Minecraft' star Jack Black delivers a personal message to moviegoers advising against joining in the viral, messy, popcorn-throwing 'chicken jockey' trend.

Jack Black has waded into the "chicken jockey" discourse. At a screening of A Minecraft Movie over the weekend, the actor surprised fans by showing up in the theater and issuing a tongue-in-cheek warning against a viral trend that involves shouting at the screen and throwing popcorn in response to an Easter egg in the film.

Whether you’re down with the “Chicken Jockey" trend or not, this video of Jack Black surprising a theater full of kids waiting to see “A Minecraft Movie" will make you smile.