[Closed] What's with random yelling at cyclists?

I don't care that it has happened a zillion times to me, and I am sure to all of us. It's still a phenomenon I don't get.

A car zips past - it could be in either direction - and either the passenger or driver yells something at me that I most often can't even make out due to the speed. It can't be to do with my having done something wrong, and therefore having pissed off the driver, as it most often happens in a context where there has been no prior contact whatsoever between us.

Seriously, then: does anyone have any clue as to why we get randomly shouted at when we are on two wheels? Does this happen to motorcyclists?

Sometimes, if loud enough, and if I am in my own 'zone', it startles me, and I feel quite angry; other times, it is just so inaudible and random as to make me shake my head with wonder. Yelling at cyclists is just weird. 😕