Sorry for being Off Topic, but that's pretty neat that you do that Fred.. and I am not surprised. I think internet access at a young age has changed how ppl learn about these things...
Anywho, I understand the PG-13 thing, but I guess sometimes I don't know what that means in terms of lewd/sexual things since standards are so different all over the world and such. For example the ratings between Canada and the US are extremely different, things that are rated PG-13, or PG-18 can be R rated in the US. We're a lot more lenient here.