The act of "sneaking" into sex with someone sleeping. As a female pursuing this act, this would involve "getting on top" and eventually waking "up" her partner, something he may enjoy. As a male pursuing this act, it could go very wrong and be considered borderline rape.
Suzy was horny in the middle of the night, but her husband wouldn't wake up. She preceded to get him hard enough while he was still asleep to begin having sleeping sex with him. He eventually woke up to this, pleasantly surprised!
by WHAMABAMA January 20, 2012