Pntbll makes a thread?!

What exactly is up with this whole "98% of the teenage population does or has tried smoking pot" thing in people's sigs? Or "99% of the teenage population does or has tried smoking pot" for that matter? Yes, I have it in my sig as a sarcastic joke, but I'm just wondering who actually believes those statistics, because they seem just a tiny bit exagerated to me. Seeing as how not even 75% of the teen population has smoked a cigarette, why would the statistic be higher for marijuana? Someone let me know in an IM conversation that my sig wasn't funny at all because it's true. I wanted to know where we got this information. So I made a thread... Yeah.

A la carte, why do people feel the need to tell someone else that they haven't smoked pot?