Not really relevant, but…
in town, there’s a short pedestrian zone. I was crossing the road just outside the zone when a car (BMW funnily enough, aren’t Minis made by BMW now?) passed close enough for me to slap the roof. So I did and crossed behind the car. Driver opened his window and started spouting some form of threats, going to punch my pus or somesuch nonsense. Anyway, my side of the conversation (and possibly how the OP should respond if it happens again) went a bit like this..
“Sorry, pal can’t hear you”
threat threat
“Nope, a bit louder there, still cant hear you”
tHREAT THreat tHrEAT
“Nah mate you’re gonna have to speak up – can’t hear a word you’re saying
THREAT THREAT THREAT
“Sorry can’t hear you for those cars behind you tooting their horns”
..and that point he left, face redder than baboons arse