Brian Williams 'raps' Warren G's 'Regulate' on 'Late Night'

It's Friday, so what better time for the latest musical mash-up from the creative minds at "Late Night with Jimmy Fallon"?

This time around, the people behind the all-clucking verison of the Lumineers and "All I Want for Christmas" with classroom instruments have assembled sound bites of the NBC News anchor "rapping" the song "Regulate" by Warren G. (On Wednesday night, it was "Nuthin' but a G Thang.")

Perhaps the funniest thing about these mash-ups is that performing a cover of a '90s-era hip-hop classic is exactly the kind of thing the newsman might do.

Bri-Wi, are you listening?