I'm sure you can get into bars underage, it doesnt make you special. let me outline a few possible outcomes.
get kicked out. Pay a cover charge, and have the x on your hand, scrub it off in the bathroom or wear long sleeves and hope the security guards dont catch you drinking. go to a shithole and have your friends buy drinks, get wasted off 2 beers, and get beat up by a ghetto chick in the parking lot. Get denied at the door, commencing a fit of rage about how important you are, how your dad can buy and sell anyone in there, in hopes of impressing your friends and offending bar staff on your way out, followed by a night of crying alone in your room, because that big mean security guard made you look bad in front of the hot ladies entering the bar at the same time you tried. Skip the bar, go through a drive thru where all the underage kiddos buy their beer, ending with 2 possible outcomes
a. Drink at home
b. Take said beer to a high school party so the freshmen chicks think you're cool.
In conclusion, you're nobody special, you sure as hell arent cool because you drink underage, you have an inflated ego due to low self esteem. probably because you are horribly unfortunate looking or you have a tiny penis.
Before you come back with your typical teenage response saying you have a smoking hot girlfriend, save it for someone else. I don't care what you have to prove, You're obviously a tool.