My
grandfather actually said this once. I later heard it again somewhere else, but I don't remember where. Apparently, in
Oklahoma, this is actually an
expression people
use.
Usage was something like "Don't just stand around there with your teeth in your mouth" -- in some garbled way it was supposed to imply that by standing around with my teeth in my mouth, I was being useless. I don't remember the exact wording, but it was still the coolest thing I had ever heard.