The joy of a wet dream is that it creeps up on you, and happens on its own - well with mental unconscious stimulation = so predicting it happening, and making it happen must be very remote. I should be hands-free bock wracking shaking deep felt tremors running through the body as a climax and ejaculation occur while a hand goes out to stop the flow, and direct the source to a different deposit location. Nude sleeping, in briefs or boxers, sometimes even with a bed companion, no predicting when it will occur.
But wow, when it does, you know it and it last and lasts.
m