Private performance
One partner performs a striptease or masturbates while the other sits back and watches as an “audience.” This is exhibition in a controlled environment. The watcher might have to sit on their hands and not join until the performance is over. Knowing your lover is watching your every move can be a huge turn-on if you have a bit of an exhibitionist streak (likewise, the watcher often loves the visual and the slight teasing aspect of not being able to touch yet).