Thanks, everybody. Wolfgang hit it right on the head. what what what's link says it was sung by the Ames Brothers in 1951.

I don't know where I got the heart-rending line "so what am I S'POSED ta do?" but it's a good line to sing while you grab your sweetie round the waist.

This is hard to express, but I remember noticing the song as a little kid because it is a good song to teach language. It takes an idea, then shows how to negate it, doing so while while bouncing rhythmically along. Perfect!