quantum conversation
When you're talking with someone who says stuff you can't make sense out of, so you treat their sentences as a superposition of all possible interpretations and reply to them generically enough such that when the point finally becomes clear, all your previous replies still make sense and you didn't end up having to make a fool out of yourself along the way.
I've had such a quantum conversation with my friend again. Thankfully I finally managed to understand what he was on about before I agreed to something stupid.