Some of my friends and I used to talk about dudes in great detail. This included size. There was only one size queen among us, and the rest of us did not understand why it seemed so important to her. When dudes stopped being temporary in that circle, and people started pairing up for life, this concluded, more or less.
The size queen is my best and oldest friend. Basically my big sis. Our mothers were best friends, and hippies, and we were raised somewhat communally. She will probably always talk to me about size if her partner is new. She's been married a long time now, so it hasn't come up. I no longer volunteer the information, unless it comes up. She's almost a doctor, (schooling and board exam are past tense; just the internships, fellowships and residency now) and she's my unofficial second opinion. She has all my charts and labs, and if I have a problem with a partner, it comes up. Namely, frequent sex involving the more generously endowed can sometimes give me yeast infections. She used to have the same problem back when I did not. Also, sometimes we just gossip, but I haven't felt inclined to do that in a long time.
I have one other friend, from another circle, who is also a size queen. She wanted to exchange all the details too. We stopped when I briefly dated her cousin. Neither of us wanted to go there. I had no intentions of talking to her about adult situations with her cousin. Just in case, she specifically asked me not to. He would not have wanted to be anyone's gossip anyway. I never spoke about anyone who would have minded.
Most of my friends do not want to talk about anyone like that and have never had these discussions with me. I'm happy to leave those talks behind in my younger years.
Regarding sex with a very, very fat dude. The best I ever got it has been a morbidly obese guy. I don't know where he finds the energy. I've run simple errands with him and he's gotten sweaty and winded just shopping for groceries. But when it is playtime he is all in. No pun intended. Sometimes he has to hold his belly out of my way, like if I kneel to blow him. But I have a small butt and slim legs, so it generally isn't a problem. I am thankful for the fat pad. I don't want a centimeter more in length. It took a long time to get comfortable with his endowment as it is. The shape is interesting and makes a vacuum inside me, now that the full length fits. I never felt anything like it before. But the best part is the way he touches me, talks to me, goes down on me, undresses me, prepares the bed for me (well, for how juicy he makes me). It's like every inch of me is sacred and he's come to practice his faith. This is some next level shit. He should teach a class. It's so good.
You know how good? I once let this dude get away with calling me at 4:30 AM on a Sunday (that's when he wakes up for the first time most days) and lure me out of my comfortable bed (into which I had only just crawled) AND I honored his request to paint my toenails red and bring my ridiculous 6" stilettos. The gold ones. It's so good, I won't drive past his job without dropping off some iced tea from the shop down the street. That dude has to stay hydrated. He's got work to do, and I'm not talking about at his job.
He recently said he wants to lose some weight because he wants to watch when he penetrates me. He needs his belly out of the way. I'd like to see his face while he gets a good look. Every time I'm about to have an orgasm he gets the most adorable little smile. So pleased with not just himself, but with me. I never noticed that I smile too. Not until one time I just had to kiss him because his smile was so cute. I told him about it, and he said, "Oh, no, YOU have the cutest little smile right now. I'm coming in," and he leaned down until our happy little smiles touched.
And THAT is mostly what it sounds like when I gossip about sex. BUT in my early twenties, among the circle of friends that includes Dr. Bestie, someone would have interrupted to ask specific questions about his body, and I would have answered those questions. Now, I think I'd keep it vague unless it was just Dr. Bestie and I. I'm just not the same person. Neither are they. They wouldn't ask today. In fact, this story wouldn't come up if the whole gaggle got together.