Yes, this show is pretty vulgar. It depicts every swear word we know, marijuana (which is actually just bullsh-t so that doesn't count) and beer. The only thing not shown is actual penetration, although nude public masturbation and nude females being pleasured by tantric sex males publicly. However, the truth is, most 15-year-olds are probably jacking off to porn by this age (90 percent of boys and 70 percent of girls at least) so either confront them about that or let them watch this. The rest is nothing not on cable or used at school. Some episodes are even almost completely clean, for instance those on Recycling, Organic Food, and Video Games. Just stay away from those on Porn, Prostitution, and Abstinence. That's just... common sense.