I had a guy in a truck with a trailer towed behind overtake me on an uphill with a sharp drop-off. He barely moved over, so this wad of metal rumbled past me super aggressively, and as he passed me he laid on the horn.

He actively tried to intimidate me off the road, for no reason other than I was going bike speed and he didn't like waiting another three seconds to get to a safe passing point.

I actually pulled over and had a cry, I was so shaken by how cruel it was.