Mastodon are running quite an unusual ticket giveaway on their Facebook page: they are asking fans to post photos of themselves twerking (!) - with the winning entries receiving tickets to see the band for free at a venue of their choice.

Fans have to upload a photo with the caption "I want to see Mastodon on [INSERT DATE OF THE SHOW YOU WANT TO ATTEND] at [INSERT VENUE OF SHOW YOU WANT TO ATTEND]. Check out my ‪#‎Asstodon‬." (and yes, they receive bonus points of they're wearing the Asstodon shorts (pictured above).

The band has also asked for fans to keep they whole contest R-Rated otherwise Facebook may not find it very funny and censor Mastodon's page altogether.

Check their most recent (and controversial) video for 'The Motherload' below.