I remember hearing this one as a child in Cleveland, raised in an extended family with my Philadelphia Irish Catholic paternal family and a Penn. Deutsch Church of the Brethren uncle-by-marriage.

Though we in Ohio tend to think of ourselves as in the Midwest, those farther west think we're easterners. I remember my dad using this phrase, and I always associated it with the Sundaygotomeeting clothes- a Sunday throat wouldn't be the USUAL throat, as it were. Where my DAD picked it up, I don't know. He was in the Army, stationed in California, so it could have come from anywhere in the states, as he soaked up verbiage like a sponge.

Joanne in Cleveland