Tim

 Tim had an iPhone but I don't think he surfed the internet.  He just watched Andy Griffin Show, Beverly Hillbillies, and Green Acres.  He didn't know

• what a pimp was
• Adam and Eve was a sex shop
• what incest was

I had seen billboards for Adam and Eve location in Greensboro, NC.  I was pretty sure his series didn't talk about pimp or incest.  I must have looked up those definitions or seen them in police procedurals.

Tim didn't know pregnancy and breastmilk were related.  He didn't know caffeine kept you up.  He didn't have boundaries with his mom because he and his mom talked about her sex life.  

As his mom, I told him

• it was inappropriate to show him my butt
• it was inappropriate to talk about my sex life

He asked me if he became hard, should he relieve himself?  I told him it was his dick, so he can do whatever.  Was I really going to micromanage his dick?  I told Tim getting hard was not an emergency and that mommy didn't need to know about his erections.  Most of this should be common sense.  I also told Tim he didn't need to know about my sex life.

Mark - my friend - agreed that his son didn't need to know about his mom's sex life and that it was common sense to not show butt to your son and to not talk about your sex life.