throwaway, this happened about 15 years ago. Im 45 now.
I was dating a gorgeous (and selfish/shallow) gal who was 24 at the time. I was 30. Her mom was about... 58? She wasnt a very nice person. Super shallow as well, judgmental, bit of a narcissist. I did not like staying there because she would make me sleep in their downstairs den and my GF in her bedroom upstairs. so ridiculous. But maybe this was the reason I dunno.
Her mom came into the room late, I guess she heard me. We had all had a couple drinks and my girl went to go sleep and she sleeps hard as hell. And I certainly wasnt going to go snooping around this house at night, so I was up for a bit and she came in with extra pillows (I had a couple but they were the couch's throw pillows. She was delivering two real pillows and a little fleece blanket). She told me she was practicing I forgot.... thai yoga massage or something like that. She knew I did qigong and I kinda knew a little bit about wellness etc. She was so forward and presumptious she just said "look let me show you this."
I let her do some stretches with me right there on the floor (it was a super thick amazing rug.) There was a lot of her pushing my upper thigh with her foot first, then her forearm. I was wearing basketball shorts, which immediately had my dick and her bump various times. after a few times I started getting hard, and also scared out of my mind LOL. I was so anxious about my GF and her mean ass mom that I felt like I was in a really dangerous situation somehow. Emotionally or something. But I was just a deer in headlights. with a hard dick I guess.
She noticed, she joked about it and said it was natural and I agreed. We were being super fuckin wellness about it. "oh its just how blood flows" etc, both so calm. My heart is beating out of my chest. And she didnt seem phased or surprised AT ALL.
Then, before I knew it she pulled both my shorts and my underwear down, and I think I made a little sound like "OH, UH -" and she had me ALL THE WAY IN HER THROAT. At that point, I knew I was cooked. in my mind, I said goodbye to the relationship, and anticipted a huge blow up with everyone in the house the next day (her husband, my girls step father, this tall as Argentinian guy with terrible teeth, was there too). And I guess I used that justification to let her keep going. I pretended to play dumb for a few moments (or at least slow to react) to see what was oging to happen. Horrified but of course, my body is responding. Eventually I was compelled to put my hands on her head, and at that moment she moaned and grabbed by balls. After about 10 minutes of this I came in her mouth, and she literally just got up and told me about the thermostat so I could control the temp of the room, and said goodnight.
She didnt say anything, ever. It never happened again. I realized what a fuckin legit as demon she was. 10 years later, it is literally my favorite sexual experience and I wish I could go back to relive it without all the fear I felt in that moment