Justin Timberlake and Jimmy Fallon Take 'Best Friends Challenge'

Justin Timberlake stopped by The Tonight Show Starring Jimmy Fallon, and to prove how strong the friendship between them is, they took the “Best Friends Challenge.” The challenge involves two friends answering questions about each other at the same time, kind of like the old Newlywed Game.

The game started off as you might expect, with Fallon and Timberlake getting the same answers for each question. For example, their favorite mode of transportation while hanging out is a tandem bicycle. Apparently they enjoy riding it around New York.

While Fallon forgot that Cheers was Timberlake’s favorite show growing up, they managed to get the rest of the questions correct.

One of the funnier moments was when they sang their favorite song, a little-known classic called “Keeping Your Poop in a Jar.” Clearly these two know what friendship is all about.

The Tonight Show Starring Jimmy Fallon airs weeknights at 11:35 p.m. ET/10:35 p.m. CT on NBC.

Watch: Jimmy and Justin play themselves as giggling campers at Lake Winnipesaukee

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