Whoops…😁 How did you not see the giant hole in the floor @justinbieber 🤔😂

A video posted by Purpose Tour | Next: Fargo (@purposetour) on


That was clearly not planned -- and it looks like it seriously hurts!

Justin Bieber did an inadvertent disappearing act during his concert on Thursday night. The Canadian crooner was walking across the stage and fell through a trap door, and it's pretty dramatic.

The Biebs was wowing the crowd at the SaskTel Centre in Saskatoon, Canada when it it all went down ... literally.

After falling through the trap door, a freaked-out Bieber said to the crowd, "Good thing I am like a cat and I landed on my feet! That scared the f*ck out of me!"

It scared the f out of us too! Glad JB is okay -- we couldn't deal if something bad happened to him!