I had just boarded an 86th Street Crosstown bus today when the driver got on the intercom and declared we were on the “Party Bus.” During the 10 minutes I was on the bus, he told five jokes over the intercom, made everyone smile at the person to their left, and conducted a guessing game involving three-letter body parts. On two separate occasions he made everyone on the bus sing Happy Birthday in honor of passengers who had birthdays “coming up in the next couple weeks or so.”