Ok, theres an episode where Joey runs into Monica's and starts dancing and singing "Oh Mommy, Oh Daddy, I am a......."(couldnt understand the rest.) But if you look closely, Matt isn't actually singing those words. Does anyone know if he was singing a different song or if the voice over just got messed up...???

It's "Oh mommy, oh daddy, I am a big ol' baddie."

Matt LeBlanc was actually singing the song, but I'm guessing either the sync was messed up or they looped it over another take.