During the song "Little Bitty Pissant Country Place", Dolly welcomes some gentleman callers. She says "well howdy boys" and walks towards them smiling. Her mouth is clearly visible and she is not speaking but we hear her saying. "It's good to see you. Nice to meet you."
When Sheriff Dodd punches Melvin P. Thorpe and sends him sliding across the floor, Thorpe slides across a design in the floor and stops with his head and shoulders outside the design. The following aerial shot shows him with his head centered perfectly in the middle of the design.
Sheriff Dodd tells Miss Mona that Melvin P. Thorpe "wears a sock in his underwear". In that earlier scene with Thorpe and Dodd, Thorpe stuffs the rolled up sock into the leg of his trousers, not his underwear.