A Minecraft Movie’ has sparked a new trend in cinemas, inspiring audiences to cheer along to Jack Black’s Steve—here’s the ‘Chicken Jockey’ meme, explained.

In Minecraft, a Chicken Jockey occurs when any baby zombie mounts a chicken. While it sounds funny, and the movie proved it’s also cute, it can pose some serious issues when the rarity occurs. Chickens are chaotic in that their speed and direction aren’t predictable. Combined with the naturally hostile zombie, they’re a formidable enemy.

During a scene in the movie when Jason Momoa's character in "A Minecraft Movie" has to fight against the "chicken jockey," or a baby zombie from "Minecraft" saddling a chicken, fans have been yelling the phrase in theaters in sync with Black's character.