i never actually heard that one before and i started smoking the stuff when i was 15 and loads of people knew.but i remember being told once that even if you smoke weed at 16 once or twice it can really fuck up your brain because its not fully delvopped, never laughed so hard in my life what a load of bull, well am 18 now and i dont seem fucked up to me. As some were talking about people being persuded into doing it most of my lot didrnt smoke it, i did it because i wanted to see what it was like and plus if you tell someone to wait till your 18 or not to do it thats just gonna make people do it more. (not thats its a bad thing to smoke weed at all.)