Is it normal for one or both parents to talk to you about their sex life

Growing up they encouraged me to be open with them, so I think they want to be open with me. They're not people to go tell it to a doctor or stranger.
Especially dad, we have always connected and been able to talk. Not sure he isn't asking my permission to have an affair or look else where for sexual satisfaction. He still loves mom but it's just not taking care of his needs.
Mom seems satisfied that "we are just getting to an age that that's not a big deal, yes I want it sometimes but the desire is short lived. We do it three maybe four times a year".
Other activities I ask her about she says, he is just a dirty old man who's mind functions in the gutter. He needs to get over it.
I can't imagine with my current sex drive, I'm more like dad, being told by a bf, no more sex or as little as possible let's just hang together.

Kind of gross to think of a wrinkly blow job or a bag of wrinkles in handcuffs.

I will say I'm getting older myself but I still haven't lost my sex drive or desires to get a little kinky. A few previous injuries do make me pop, crack, and limit a few creative positions. I do try to stay active and in shape though.

Has mom seen a doctor? They can help with the dryness or see if something else is going on, that could be causing the pain.
Are they open to finding dad a nsa play toy?

Its pretty fuckin weird. But I remember a friends dad was kind of perverted like that and would let his teen son fuck girls at his house and would tell stories about banging hookers and doing coke lol

Thanks for the responses. I'm not sure mom would ever approve of him looking elsewhere. She is pretty possessive and kind of thinks his drive should be the same as hers. Dying!

Your Dad should get a prostitute to fulfill some of his kinky desires and your Mom should approve of it. There are women who specialize in satisfying your father's kink.

I think it's inappropriate.