Kats and I usually put a CD or movie on the try and hide the noise from the kids. One night she put on Monty Pythons "Holy Grail". It was a bit distracting but we were able to start a nice nipple torture scene.
Things were going Ok until we both heard " We are the knights who say nifffftthhh!" At that point the whole scene came to a screaching halt. We were both laughing too much to continue.
So the rule is - No Monty or Mel either during a scene!