It's nearly 20 years since Slipknot formed. Since that time the metallers have been known for their a) INCREDIBLY loud music and b) those weird masks they wear on stage.

To mark the auspicious occasion of their soon-to-be-released new album '.5: The Gray Chapter', the lads seem to have treated themselves to a trip to the joke shop to pick up some lovely new masks - a tradition the band have maintained for each album release so far.

This is exactly what they'll look like on their next tour and, well, it's safe to say that you won't forget these images for a while.

Seen on Buzzfeed