I'm The One DJ Khaled feat. Justin Bieber
Max, Siva, Jay, Tom and Nathan reveal what it was like filming 'Lightning' - their raunchiest video to date.
The promo sees the boys head to an LA ranch to be joined by a group of party-going extras.
However it wasn't all plain sailing for the boys after band member Max George required medical treatment following a wasp sting.
Check out the behind the scenes video below...