I have seen one that says "JUST INJECT IT", and it has a needle and syringe shaped like a NIKE swoosh.
I would personally never wear one, because I dont want people to know I juice. Not because i am scared of the authorities. I do think that it is the stupid muscleheads that flaunt that shit off, same with the pot T-Shirts, only the stupid punk kids that wear them. But if you are not one of these people and just want to wear one because you think its kinda cool, then why the hell not. If you want to wear it, but wont because you are scared of what the authorities do, then you are truly brainwashed. The US gov is doing a great job of scaring you out of your freedom. NO offence, but sometimes the US really sounds like a fucked up place to live.
Mavy