The milk crate challenge is taking over, with videos of people attempting -- and usually failing -- to walk up and over a pyramid of milk crates.

This summer's viral craze of stacking milk crates in a pyramid and trying to climb them like stairs has been banned the app that helped give life to it.

The Food and Drug Administration is discouraging people from trying the TikTok milk crate challenge following a tweet from Conan O’Brien.