And I would've won money on that too!

"For our latest mission we turned a carousel into a horse race. A single jockey was joined by two announcers, a roaring crowd, and a trumpeter. The children on the carousel had no idea what was going on. The mission took place at Le Carrousel in New York’s Bryant Park."

Improv Everywhere is a New York City-based prank collective that causes scenes of chaos and joy in public places. Created in August of 2001 by Charlie Todd, Improv Everywhere has executed over 100 missions involving tens of thousands of undercover agents.