Desiree, beat me to the punch, "The Grass Is Always Greener" from WOMAN OF THE YEAR definitely beats most of the numbers mentioned on this thread. There's also "Best Friends" from THE WILD PARTY and "Bossom Buddies" from MAME which was mentioned already.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"