Comedian Jimmy Fallon took a quick but icy dip in Lake Michigan — dressed in a full suit and tie — then screamed and darted out quickly with a shocked expression on his face.
"The Tonight Show" host made good on his promise to make Sunday morning's so-called "Polar Plunge" with Mayor Rahm Emanuel as a condition for the mayor appearing on Fallon's show in New York, following an exchange of tweets and challenges.
Emanuel, clad in a green Chicago Public Library T-shirt and shorts, went first, followed immediately by Fallon. Both were soaked from head to toe as they fled the water to cheers from a large crowd that had gathered to watch. A group of bagpipers provided the soundtrack for their rapid dash into the 32-degree lake.
Watch the live coverage on NBC Chicago.