Another true story:
My wife and I have been friends with another couple for over 25 years. About ten years ago the other wife (I'll call her Jill) started to fool around in snatched moments whenever the four of us got together. I could tell many (true) stories of events but will relate this one for now.
They were over for a special meal and staying in our house. Early evening, I was helping in the kitchen with the cooking etc. It was time to change out of jeans into something a bit better. I was upstairs and went to the bathroom, Jill was in there doing her makeup. We were the only two upstairs. We had a quick kiss and I slipped my hands up her dress to find she was wearing hold ups and NO knickers! I was very horny and slipped two fingers into her pussy and rubbed her clit with my thumb till she came.
Next morning, I was about to use the shower in the guest room (the only one). Everyone else was downstairs. Their overnight bag was open and just next to the shower door. I peeked in and found two holdups right at the top. I immediately got an erection, wrapped the holdups round my cock and pumped away. I shot a lot of cum into both holdups then carefully put them back.
A little later with someone else in the room, I was able to give a sort of mime/gesture to Jill that she was to look in the bag as I'd left a message in the stockings.
She told me weeks later that she looked straight away when they got home. She found the stockings and was turned on enough by the sight and thought of what I'd done that she rubbed her pussy with them till she came.
Yes, it really did happen!