Most people suspect it I'm sure, just due to my size. I lift at my college's rec center, I dwarf almost everyone in there so I kind of stand out. No one's ever come out and asked me, but when guys ask how I got so big, what supplements I take, etc, I just throw them the old "creatine, protein, and 5000 calories/day" bit. They probably don't buy it, but they usually don't pester me after that. Only my best friend actually knows I use gear.