Whatever. My sister runs an alternative sentencing program for drug abusers. Almost ALL of them started out by smoking pot. She says she can tell at what age they started smoking the stuff because that's the age at which their mental development ground to a halt. One of our brothers is a perfect example. He's a 56 yr old man with the mentality, and maturity, of an 18 yr old.
I bet he still wears an ac/dc t-shirt too.
The guy I ran into the other day did, and he is around the same age. It's either an AC/DC shirt, or one with a pot plant symbol.