If you’re going to a Foo Fighters gig anytime soon heed this warning: do not pick a fight or you will feel the full wrath of Dave Grohl. And surely no one wants that.

The Foo Fighters were recently playing a gig during the iTunes Festival in London when what we see in the video happens.

Foo Fighters founder and frontman Dave Grohl stops performing mid-song to break up a fight occurring in the crowd. Not only that but he then proceeds to verbally abuse the combatant before demanding he leaves the venue.

Grohl is a big guy who I wouldn’t want to mess with. And as soon as he singled out one person the crowd were with him. I wouldn’t be surprised if the guy ran away as fast as he could.