Earlier this month, 48-year-old Scott Biumi of Cumming, Georgia, who's a cop, was in the McDonalds drive thru lane, and got upset that it was moving too slow.  So he got out of his car, started screaming at the teenager in front of him . . . and PULLED HIS GUN.  They took down his license plate and called the cops . . . and he was arrested for felony aggravated assault. Dude i didn't have enough time to super size my fries !!! Click here to see video