After intercourse, the male gets up while the female is otherwise ocupied ( i.e...sleeping, in restroom, back turned) and proceeds to wipe his penis clean on the nearest set of drapes before he leaves
Male..."Would you be so kind to fetch me a drink of water?"
Female..."Sure I'll be right back."
Male...(gets out of bed and wipes his dick clean on nearest set of drapes before getting dressed to leave).
Has just performed a Drape Escape...best done after a one night stand