'NBC News' anchor Brian Williams knows how to poke fun at himself. After all, the father of 'Girls' star Allison Williams has hosted 'SNL' and parodied himself on '30 Rock' -- but this time, 'Tonight Show' host Jimmy Fallon did it for him, piecing together a ridiculously hilarious video that makes it seem as if the anchor is rapping the 1979 hit, 'Rapper's Delight.'

The video, which premiered on 'Tonight' last night (Feb. 19), compiles dozens of one-word clips of Williams, when edited together, make it appear as if he is rapping the entire Sugarhill Gang song. Halfway through the vid, Williams is "joined" by Weekend anchor Lester Holt, who also spits a pretty good rhyme.

Watch the hysterical video above.