Mine know. I'm going on 32, but have been using them since I was in my teens. Once I left a bottle of those old fake blue(supposedly American) Dianabol tabs on the toilet and forgot about them. My Dad found them and called the pharmacy to see what they were, and then knew. They made me see a shrink for it. Stupid fucker would ask me about mine & my gf(both of us were 16-the fuckin perv)sex life,and other intrusive questions. I totally treated him like a piece of shit, and told him nothing. Once the bills started racking up, I think my parents decided that they'd just deal with it. Anyhow, I have the feeling that they probably are smart enough to put 2 + 2 together, and realize that considering that I have been using AAS for that period of time, and never had any health problems, that they probably are not nearly as harmfull as the government/media would have you believing.