I'm a recent adult (I'm 19) who still lives at home. When my sister (19 at the time) left for college, my mother bought her a pack of condoms. I've made it clear to my mother she's not to do the same for me (I'm asexual and think is sex is disgusting). My mother makes a lot of dirty jokes that I don't appreciate. But I think that, should I ever desire to talk about sex with my mother, she would be receptive.

I think that the best thing you can do is make sure your children know they can come to you with questions or just to share anytime, but don't push them to talk about things.

And - my personal preference - lay off dirty jokes. It's really bothersome to people like me.