My underwear disappeared during my son's sleepover (F35) (M18)
I usually let the laundry pile up and do it all on Sundays. For me, washing and folding is a relaxing experience, so I wait until I have a lot before doing it.
This Sunday, my son had to attend a soccer tournament in another city and invited several of his friends to sleep over so they could catch the bus from here, which is much closer than where they live.
When I started doing laundry, I noticed that all my underwear was completely clean and smelled of hand soap. At first, I thought maybe I had accidentally thrown a clean pair in the laundry basket, but no, every single one was clean, even the one I had worn that Saturday before going to bed.
I didn't quite understand what had happened until I moved the bed while cleaning my son's room and found another pair. There was an absurd amount of semen in it, and it was still wet. I even think it couldn't have been just one of them, judging by the amount of cum there.
Since they all stayed in the same room, I think what happened was they all had fun with my underwear and cleaned it up before going to sleep, but when they woke up they wanted more, so they shared one of my panties so I wouldn't notice.
What do you think? I've fantasized about things like this before, so maybe my mind is playing tricks on me and I'm imagining things that aren't there, but I honestly can't find any other explanation for this.