About a block from the office, I'm gliding up to a red light on the left hand side (This particular street is one-way and has bike lanes on both sides). A car or two up, a driver dumps out half of his cup of coffee on the street, right in the bike lane. I pull up and say, "Well, I guess I'm glad you didn't wait 10 seconds longer to do that."

He's shocked and apologetic. "Oh, I'm sorry! I didn't see you."

I don't say another word; I just give him the Death Glare until he averts his eyes.