If you are 22, do what you want to do.
I hope lady luck smiles upon you and you do not regret it when you grow old .
its you body & your mind ;-)) .that's all I got to tell you ;-)) plus your 22 .
It's going to be on you until you die. They'll get over it, then you're left with the consequences of your actions :).
Yeah. That'll show 'em. Get something you'll regret and have to wear forever like the same old t-shirt day after day. UP THE REBELS!
do so at your own risk