A few years ago, two hungry and adventurous friends decided to do a fun pizza challenge: they were going to visit all five boroughs in one day and eat a slice of pizza in each. And they were going to do it without using any cars, instead traveling only by subway, ferry, bike, and foot. Out of this a tradition was born: the annual 5 Boro Pizza Tour. Now every year participants meet under the arch at Washington Square Park to receive a list of the appointed five pizzerias. Participants must go to each one, in any order, eat a slice and document it on Instagram (with the hashtag #5boropizzachallenge), and race to the finish. In honor of this event taking place tomorrow, Jon skillfully handled and enjoyed a very cheesy slice from local favorite Rocky's.