Surveillance footage captured a chainsaw wielding maniac who terrorized drinkers at the bar he was kicked out of for lighting a cigarette and smoking.

According to reports, 24-year-old Dean Dinnen was allegedly under the influence of booze and drugs last August when he returned to the U.K. pub and began charging at patrons with a motorized chainsaw in a crazed revenge act.

But patrons fought back–throwing chairs, stools, and finally, a beer barrel that knocked him to the ground.

SEE THE SHOCK VIDEO AFTER THE JUMP!