Comedy is all about timing, apparently (I'm still yet to discover what comedy is about).
I think that means you need to know when to stop a joke.
Like the other day I was out with a friend and this hotbabe went into a shop with an ugly guy that was clinging on like a boyfriend-type.
We both concluded that she was in it for the money.
I made the call "women: first they fuck you, then they fuck your credit card."
It was timely and funny. SO we decided that the whole "first the fuck you, then they fuck your credit card" thing applies to other things.
"Just like kids. First they... wait... no... no..."