I'd respond to them in the way they would've asked me. If they're like kinda tough guys, I would've told him to stfu. But if he'd asked in a respectul and polite manner, I'd answered more gently I guess.
Would you ask someone that, before you started juicing? If I had, I definately hadn't asked intentionally in a bad manner, more respectful, wanting to learn way. If you know what I mean.
Since I train at home, I don't have that problem in a gym though...
There's this guy that lives in the same street as me, and I'm pretty sure he is or has been juicing. Big ass mofo. Though he looks kinda angry all the time, so no way I'd dare ask him. lol