There are the basics: cars, bus, train, plane, nature, beach... others less classic such as public buildings, religious buildings... Our imagination and our libido having no limits, you can have be realized which is for many of us a fantasy.
I remember a personal experience:
Following a car accident, a burst kneecap, a few days in hospital followed, with pins, strapping, several casts, hemorrhage when the nurse removed the redon tube. Really not in great shape for 3 to 4 days.
After a week, I was able to shower while protecting my cast, I began to emerge again, my girlfriend at the time had been allowed to stay a little later in the evening, she was sitting on the edge of the bed , obviously I caressed her chest on her blouse, then I slipped my hand under her skirt to feel the softness of her thighs. My cast only allowed me a very limited margin of movement, she then noticed that the sheet was lifting following the effect of her contact. I then ask her for a little treat, which she gives me for a few moments, then she takes her head out from under the sheets, saying to me: "Can you see if the nurse comes in?" continuing with her hand under the sheets, that did not fail, at the moment when I released my liquor the evening nurse entered at the same time as she knocked on the door.
I must have been so pale after my orgasm and especially my condition, my girlfriend was red with shame, she no longer dared to move her hand under the sheet with the sperm running down her fingers, the nurse saw our "peculiar" state, because she asked us if something was wrong, and we answered together: "No, no, everything is fine." She left following with a little smile, to our great relief.
A few days later, just before my exit but still limited in my movements, I couldn't stand it any longer, I asked my girlfriend to come on top of me.
At first reluctant for fear of being surprised, and at the same time exhilarated by our previous experience, she came to ride me to impale herself wearing just an unbuttoned blouse which finally allowed me to caress and eat her breasts.
The constraint of abstinence and the passion of my partner got the better of my desire to prolong the pleasure. Fearing a surprise intrusion, I have never seen my girlfriend get dressed so quickly.
I would have great pleasure reading all your experiences.
Nans