If you go to a stadium to watch a sporting event with your child and decide to purchase an alcoholic beverage, whatever you do, don’t ask them to hold it for you while you take off your coat or stand to take a photo.

That might seem harmless, but according to USA Today Arizona Cardinals season ticket holder John Coulter found out the hard way that there’s a steep penalty for doing just that.

Apparently Coulter claims he asked his 15 year old son to hold his beer cup while he took a photo just after the opening kickoff of the Arizona Cardinals’ preseason game against the Dallas Cowboys on Saturday, and was nabbed by two undercover officers with the Arizona Department of Liquor Licenses and Control.

Coulter was reportedly told that what he did was illegal and that he could be arrested for it.

Fortunately he wasn’t arrested, but what should have been a fun father-son night ended before it got started as the two were instead reportedly escorted out of the University of Phoenix Stadium.

Sgt. Wesley Kuhl of the Arizona Department of Liquor License and Control told USA Today that he’s lucky they were just forced to leave, because the penalty could have been much worse.

“Providing alcohol to an underage person or an underage person in possession of alcohol is a Class 1 misdemeanor,” said Kuhl. “The consequences could be up to, and this is a maximum, of two years in jail, $2,500 fine and three years probation.”