rehearsing conversations that never happen

Sometimes the person in my head says something I did not expect, and I have to redo the whole scene. This can take twenty minutes.

i once spent a whole walk planning what i'd say to the building manager. when i actually saw him i just said "the light in the hall is flickering" and that was it.

I have had the same argument in the shower six times. I win every time. In the real version I said "okay, sure" and left.