Check your state's carry rules:
Bars. In some other places, such as establishments where alcoholic beverages are sold and consumed, firearms are prohibited unless they're handguns carried by people with concealed carry permits and the establishment doesn't post otherwise.
Consumption of alcohol. Even with a permit, it's always illegal to carry a concealed handgun away from your own property while you're drinking alcohol or while you still have any alcohol or illegal drugs in your blood.
It's illegal, so next time step outside and call the police. That dipshit is a menace to society.