spespionage
This is the act of having sexual intercourse with a woman, while another guy is hiding in the closet watching/masturbating. As the individual in the closet is climaxing, he runs out, and blows his load on the womens face, and then runs out of the room, laughing hysterically.
"So the other day I was screwing my girlfriends brains out, when out of the closet jumps a complete stranger, and commits an act of spespionage."