When longtime comedian Bill Cosby came to visit Late Night With Jimmy Fallon, the Roots welcomed him with a classic reggae track from 1981. Why? Although Cosby didn't make the connection at first, the late night band was referencing a scene from The Cosby Show where the sitcom dad watched with disdain as his daughter and boyfriend sang along to Black Uhuru's "Sponji Reggae."

Despite the nostalgic reference, the former Jell-O spokesman admitted he isn't a fan of reggae music. He slyly explained that moving to the genre requires "dancing with one leg shorter than the other." And the 75-year-old comic proceeded to demonstrate to Fallon, Questlove & Co.

After a bit of lopsided dancing, Cosby admitted to having some intestinal problems, leading him to request some "walking-in-case-I-make-a-sound music" as he moved to his chair. The Late Night backing band happily obliged.

Check out the hilarity above and then watch the classic Cosby scene below.