This Mash-Up Video Of A Newsreader Rapping Rapper's Delight Is Hilarious

Jimmy Fallon has got us cracking up in his latest venture for The Tonight Show.

US talk show host Jimmy Fallon is the source of all our laughter lately. 

In his latest stunt as The Tonight Show's new host, the presenter has released a highlight video from the show that sees US news anchor Brian Williams rap the Sugar Hill Gang's song Rapper's Delight. 

The one and a half minute clip has been cleverly pieced together using tons of archived footage, with fellow reporter Lester Holt also thrown in to assist towards the ends of the clip.

Last week saw Will Smith join Jimmy Fallon on the show, the two put on their old-school tees and denim dungarees, hit play on a classic beat and for almost three minutes took viewers through the entire evolution of hip-hop dancing. If you haven't seen it yet, watch the hilarious video here.