An idiot in a pickup truck got mad that I wasn't riding in the gutter. He kept honking, and then stayed on my left. Unfortunately, I let this moron make me mad. I spit on his truck and gave him a visual representation of what I wanted to say. He then picked up his cell phone and indicated he was about to make a call, as if this was supposed to be intimidating.
He hung back about twenty feet on my rear for a few blocks, effectively blocking both lanes of a major street. Fortunately, I hit a perfectly-timed yellow light that let me through but stopped him. I looked back, waved, and went on my way. I zigged and zagged over to a parallel route home so I could end it.
I should have just smiled and waved at the idiot from the beginning. At least that wouldn't have escalated a confrontation between a 23 pound bike and a 2 ton truck.