I'll have you, I will

BBC 6 Music tent at Summer Sundae Festival

Not clear what is going on here.
Caption suggestions welcome.

Gideon Coe: you fuckin' watch it son or i'll clip you with this umbrella and smash that fuckin' Fosters can down your shittin' two-bit indie loser throat*


*Mr. Coe is a respected broadcaster. He would never utter such inappropriate language on air or in private conversation. He is a scholar and a gentleman and the very suggestion that he would indulge in this kind of behaviour is a disgusting slur against a man whose conduct and reputation are beyond reproach. Actually I think we were discussing our mutual love of Red House Painters.

Thanks to Sophie Harris for the photo.