Me: Michael, do you know why the light shade is off the light over the pool table is off?
Michael: Because the light was dodgy and I was trying to get it brighter so we could play pool.
Me: Did you try the turning the dimmer switch?
Michael: What dimmer switch?
Me: The one we installed when we put the extension on about 12 years ago.
Michael: ah ...
Me: Some electrical engineer you're going to be ...
