By now you’ve heard about the recent allegations of Justin Bieber getting a female fan pregnant. The pop star denied any involvement, but that’s not stopping Jimmy Fallon from poking fun at the situation. Last night on Late Night With Jimmy Fallon, “Big Justin Bieber” and The Roots performed their new single “(It’s Not My) Baby.”


Watch Justin Bieber’s “Otis” freestyle on Power 106 L.A.’s Big Boy Neighbourhood after the jump…..

lol, do you think his verse was ghostwritten?

Previously: DJ Premier Denied Justin Bieber for 2011 BET Hip-Hop Awards Cypher