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 band was halfway through the second concert of their current world tour in San Antonio, Texas, on Wednesday when Dickinson spotted someone smoking pot 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 f---ing shit out? "My lungs are trying to work up here, dude."

-Iron Maiden Pictures

(This news article provided by World Entertainment News Network)