Naughty by Nature celebrated 20 years in the music industry by performing a medley of their classics on “The Late Show with David Letterman.” Treach, Vin Rock, and the DJ Kay Gee started with “Flags,” a song from their new album Anthem Inc., and took it back with “O.P.P.” and “Hip-Hop Hooray.” The audience got down with Naughty, standing on their feet and waving their hands.

[MWP]