What song is about a little old lady that likes to dance?

[S]

I heard a song while back and really enjoyed it. It had a fifties rock and roll sound to it and was about a woman that loved to dance and still rocked the dance floor even as an old lady. I copied some of the lyrics into my cell phone hoping to google them later to get the song, but nobody on the internet has posted the lyrics. The lyrics I have are something along the lines of "Mama's hair is turning gray, there are lines upon her face" and the phrase "dance floor again" is repeated often. I wish I had more information, but I would appreciate it if anyone knows the song. Thanks!