I am not sure if it was because Bill Cosby was a grown man in his 50's and his body could not dance like young people, why was bill cosby dancing in all his theme songs bad ???

https://www.youtube.com/watch?v=n3eJkf4erbI
https://www.youtube.com/watch?v=n3eJkf4erbI
https://www.youtube.com/watch?v=n3eJkf4erbI
https://www.youtube.com/watch?v=n3eJkf4erbI