i still have my return of the jedi pyjama top from when i was a kid, i tried it on a couple of months ago, but didn't wear it to bed, that would have been crazy.
i have a health problem that can be excacerbated by tight elastics on the waist, so don't wear underwear generally, so that is most boxers, y fronts and pyjama bottoms out the window, but sometimes i will wear normal trousers to bed as a chastity belt. if it is cold i will wear a shirt, if it is really hot, i will throw off the clothes and covers, get my head in the pillow and perk my bum in the air, feeling the delicate breezes of the summer as they drift through my open window. One summer i woke up with a beautiful multi coloured butterfly perched on my butt, i am not sure if he flew in the window, or if i had had a caterpillar living in there for a while.