Sloppy Hot-dog Special
When a guy and girl fall asleep naked in the spooning position and the guy has a wet dream. Due to the spooning position the guys member has slid in between the girls butt cheeks creating a hot-dog effect. When he ejaculates in her ass crack it makes it sloppy.
When Mark tells his friends about the strange circumstances surrounding his wet dream last night one of his buddies exclaims: " it was sort of like a sloppy hot-dog special."