I had a, well, nonexistant leash. My dad raised me with the rules being (And I'm serious, this is a quote):
"1) Don't lie to me.
2) Don't get her pregnant.
3) Don't get caught.
4) Don't fail high school."
Basically, as long as i was getting decent grades and didn't have a police record, I could do whatever I wanted whenever. Now of course, being a kid, I DID lie to him, I DID get caught (Many times, doing many things) and I DID have a very close brush with failing. I never earned a police record however, and I think that is BECAUSE of his lax rules. As a teen, if I wanted to get laid, I could bring her home and grab a condom from the bathroom. I didn't need to sneak around in a car and hope a pull-out would work. This helped prevent the whole pregnancy thing, lol. If I wanted to smoke weed, I could do it in the privacy of my own home without having to hide. I never did it, but it smoking pot is never going to be "sticking it to the man" because, well, "the man" in my life doesn't care, therefore I'm never driven to try pot. If I want a drink of booze, it's in the fridge, and my dad would rather have me learn the down-side of booze at home where I'm not gonna get killed. Now, I will admit, I have had a sip and learned quickly I'm just not fond of the stuff. So, before I'm able to go out drinking all night and do something stupid, I already know I just don't want to do that.
As far as music, my parents think anything I listen to is crap, but they never told me not to listen to it. So, I grew up listening to things like Flogging Molly, Linkin Park, etc. Hip-Hop/Rap was NEVER on my list. But here is where it gets interesting. Though my parents didn't prevent me from listening to Hip-Hop/Rap, I prevented myself from doing it not because I didn't like it, the way I did booze, but rather on principle. So, Hip-Hop/Rap was something of a forbidden fruit. Now, when I ride in my friend's car who listens to it all the time, I get a bizarre rebellious pleasure feeling like I am doing something... wrong. I still don't like the stuff, but it's like a private rebellion I don't get from drugs, alcohol, etc., because they were never forbidden.
As far as movies go, I saw Black Hawk Down when I was nine with my dad. I saw Road Trip (Uncensored) even younger IIRC, again with my father. When I turned 17, it was funny not to see a rated R movie, but to go without my father next to me, as I had gone to see, basically anything I wanted to with him.
Basically, I was raised to try it myself and see if it was something I liked. This worked out pretty well for my father as I have become something of a conservative republican (I bring politics into this only to illustrate that despite being exposed to essentially softcore pornography and excessive violence at an early age, I have not taken to either. Well, okay, I still love gratuitous violence.) I did try quite a few things as a kid, though many others I just didn't bother with, and I determined for myself I don't like rap, I cannot stand people who use words like "b****es" and "Hos", I'm not fond of tattoos, and I would rather walk around in a suit and tie than pants around my arse and a wife-beater.