Whoever mocked the Walker Texas Ranger Lever, You're gunna get it. That thing kicked ass!
I don't know, back when I was a big pothead, people, without a doubt, no questions asked, knew. I was the typical pothead, grateful dead shirts, spaced out so hard I'd be paying attention to what you said last week as I was talking to you, giggled at basically everything then stared frightened/knowingly , and had no idea what was going on. Ever. God, those were the days.
Nowadays, I look good/straight-edge to administration (Just yesterday the guidance counseller said I don't strike him as a drug user) but everywhere I go, I'm asked to buy/sell drugs.
I think everyone I know knows, it's kind of hard not to figure it out after knowing me for a long time. I'm generally unstable, and, being a low-level addict, I'm always on drugs.
So, in closing, I used to, still do, but only kinda.