The wife came back from buying her costume for a fancy dress party earlier. "Stay there baby" she said to me, "while I nip upstairs and put it on to show you." She came back down, opened the living room door and stood before me. "Wow honey, that's a winning costume you've got there." I told her. "That's the most convincing killer whale outfit I've ever seen." She replied......... "I'm a nun, you bastard!