Millsy naked in bummer Blackout Challenge

Rob 'Millsy' Mills, has featured in a bummer Blackout Challenge on 2DayFM.

The star of Grease the Musical was draped in just a towel for the stunt.

Why?

Well, it was all part of a dare given to Jules Lund from Jules, Merrick & Sophie with Mel B.

Warning: The video is not for the squeamish.

Lund was led blindfolded into a colonic irrigation facility and then told to perform a procedure on his friend.

Colonic virgin Millsy said: "It's good for my health."

Watch the video here.