Been rather icy up here in New England of late, but they take pretty good care of the roads (though not as well as in Buffalo, I'm sure) and one of my co-workers commented that her driveway had been the slipperiest part of her drive in. Said she almost went "ass over teakettle" on the way to the car...now that's by no means the first time I've heard the phrase, and I started wondering out loud about where the phrase came might have from, and she said, "from my grandmother."

Couldn't come up with a suitable comeback for that one on the spur of the moment.

A comeback isn't really needed, and Ass Over needs no explanation, but why teakettle?