Iron Maiden frontman Bruce Dickinson proved his zero tolerance to drugs - by scolding a fan for smoking marijuana during one of the band's gigs.

The Run To The Hills hitmakers were halfway through the second concert of their current world tour in San Antonio, Texas, on Wednesday (May 21) when Dickinson spotted someone smoking drugs in the audience.

And, according to Blabbermouth.net, the singer was quick to reprimand the man in front of the entire crowd, telling him, "Would you please put that fucking shit out?

"My lungs are trying to work up here, dude."

(by Wenn)