For John Coulter, last Saturday's Cowboys-Cardinals preseason game started off innocently enough. He and his 15-year-old son were in the stands at University of Phoenix Stadium, and the plan was simple: Have fun and enjoy the afternoon. That included taking some photos to commemorate the occasion. But things went horribly wrong when Coulter asked his son to hold his beer while he snapped some pictures. A few seconds later, undercover officers with the Arizona Department of Liquor Licenses and Control showed up and informed Coulter that serving alcohol to a minor is not only illegal but he could be arrested for it. Coulter and his son were then escorted from the stadium and served a citation for trespassing.