I've heard it all my life, never realized until just a few months ago that apparently I'm the only one in my family still using it, as the younger relations have seemingly never heard it and are puzzled by it. Mostly I heard it from Mom; she was born in Dubuque in 1911 to parents of German and Irish descent. With us it just meant the throat that was reserved for special use, not everyday. I can remember us joking, when I accidentally inhaled something on a Sunday, that this time it must have gone down my Monday throat.