I'm not a teen any more, but I can say that ads like this would not have influenced my thinking at all when I was one. The problem is that they don't reflect the reality as teens see it. While I never did pot since I was an athlete and got repeatedly drug tested, I had quite a few friends that would use occasionally. They never worried about being boring or addicted, only whether the police would pick them up. That's not to say that some of them didn't become addicted and then boring ... but teens often don't think that far ahead.

So in the UFO commericial, it appears to me that while the guy is only smoking out the girl is smoking something stronger. After all, she's seeing little green men and flying in a UFO.