Also, different kids mature at different rates. I wouldn't give a shit about my kid watching, say, an R rated movie if I understand they'll be able to handle it and understand it's fiction. If I had a 14 or 15 year old and they had a healthy understanding of sex and the dangers of porn, I wouldn't give a shit if they managed to see some poorly drawn tits online. Why? Because if you didn't intentionally seek out lewd content as a teenager you're either very very religious or a liar