A guy I sail with hit Bill Murray with his car.
Obviously I haven't heard Bill Murray's side of the story, but it sounds like he stepped into a slow residential street from behind some parked cars and the guy hit the brakes, leading to just a tap.
I don't think they had a discussion, but their faces looked about like this:
"Oh shit I hit someone with my car"
"Nah, I'm alright man, my bad--should have looked"
"Oh shit I hit Bill Murray with my car"