Halloween, 2000. I was on the Orange Line riding home from an evening class at Northeastern. Some kids got on at Mass Ave, and got off at Back Bay. As they got off, they whipped an egg off the back of the head at the poor lady who happened to be sitting next to the door. The gentlemen next to her took out a rag and proceeded to clean her off. I'm not sure what was weirder, the egging, or the act of kindness.