people around here still don't understand roundabouts, though we've had them all over the city for years now.
i entered a roundabout, heading right at the same time as the dude to my left entered. plenty of space. we were several car lengths apart. he freaked out and started randomly honking his horn and flashing his lights at me. then sped up to fake rear end me while blowing his horn.
considered brake check but had my kid in the car. he followed me until i had to turn and faked like he was going to follow me in to the lot but kept driving