Kaley Cuoco said it was originally supposed to take place off-camera and she was in her dressing room and heard some smacking noises and came out to find them filming it and wondered "What the hell is going on here?" And then general hilarity ensued...
Makes you wonder how it got "on-camera" and whose idea it was. And who lobbied for and against it?
I wonder if Dallas was on the crew?

(I doubt it because I read he's moved to Florida...)