Leave it to Jimmy Fallon to take one of the most bizarre news stories this week and turn it into a hilarious musical sketch.

The “Late Night” host was backed up by his house band The Roots for a performance of “(It’s Not My) Baby,” based on Bieber's real song “Baby.”

Nobody was sure how he’d do taking over Conan O’Brien’s time slot last year, but Jimmy Fallon has proven himself as the real deal.

A big part of “Late Night With Jimmy Fallon” success is also a direct result of his house band, The Roots, who add a much-needed flavor to what can sometimes become a stale genre of television.

The hit MTV reality show “Jersey Shore” has been the target of many a lampoon, and Jimmy Fallon is the latest to take a shot at the guidos and guidettes.

In the new clip, Fallon is joined by his “Saturday Night Live” pals Tina Fey, Amy Poehler, and Rachel Dratch on the “Jersey Floor” of an NYC office building.