Definition of "patootie"

I've seen an adorable unsigned punk band perform here, taken in some wickedawesome (all one word, of course) spoken word, and danced my patootie off to electro and synthcore djs. Yay.

2002, Pleasant Gehman, The Underground Guide to Los Angeles, Manic D Press

… He got on Forty-second Street, and he was kinda fresh from the start. At Sixty-sixth he came sasshaying[sic] right down the car and said ‘Hello, patootie!’ Well, I drew myself up …

1920 April 10 – August 28, Pelham Grenville Wodehouse, chapter 11, in The Little Warrior [Jill the Reckless], New York, N.Y.: George H[enry] Doran Company, published 8 October 1920, section 1, page 194