Sticky nap
The act of falling asleep after masturbation, without a clean up operation taking place.
Dave: Carl, wake up! Oh shit, what the hell is that on your t-shirt?
Carl: umm oh err, what??
Dave: Sticky nap??
Carl: Ok, you got me.
Carl: umm oh err, what??
Dave: Sticky nap??
Carl: Ok, you got me.