I'm 21 and I still don't want my parents to know that I occasionally drink and smoke. If they find out, I don't care but it's not something that they necessarily need to know.
I don't want my dad to know (even tho he already does) know that I'm gay. He gives me these hints about him knowing by saying that it's not God's plan. Bitch, shut up. You know what I am, so deal. You'll have no choice but to once I confirm your suspicions.
I don't live with either of them, so they can't say much.