Both my mother and hers have talked to me about their sex lives… at length. So has Mom’s Dad. All of them have wanted to talk about mine. None of them was drunk at the time.
The other side of the family was more circumspect, phew.
My mother-in-law, (and I am separated and persuing a divorce from her son) likes to talk sex. Drunk, sober, whathave you. I know all about her first time recieving oral -uh- gratification. (It was from her current boyfriend. My mother in law is 64.) I know all about my late father in law’s abilities and lack thereof. I know about the affairs she had. La la la… Im not sure if it was worse when I was still with her son, or worse after. Then, I had to have the “So what did you and my mom talk about” discussion with my ex. “Not much” lead to accusations that I was hiding something…and caused arguements. Now she just is extremely graphic, my comments that Im not comfortable discussing this leads to “Well we are both women of the world”…
Yes, I bleach my ears and brain regularly, why do you ask?
Maybe your response to this should be, “You sound more like a lady of the evening.”
Ninja, that sounds truly cringe-inducing. If she is embarrassed about it, I would totally tease her about it. Get a little revenge, you know? 
featherlou, thats a good one. Not sure I will ever have the nerve to say that, but at least Iwill think it and smile.
Seriously, the worst was knowing she had affairs. Long before I met them, she had two different affairs while her husband was in hospital recovering from a massive stroke, She left him 13 months after his stroke, three months after he got back home. Happy New Year. She told me this while the father in law was living with us, (me and my not-yet but soon to be husband) waiting for placement into longterm care, ten years after his first stroke.
You don’t need to be embarassed to talk to mom about your sex life.
That’s what WE are here for.
So, g’head…share.
I don’t think I could continue talking to her about that; I feel pretty strongly about infidelity, and I don’t think I would respond well to someone talking about their own infidelities lightly or callously; heck, even talking about them at all. Don’t want to know; don’t want to have to decide whether or not to tell you how low you just sunk in my opinion.