Foghorn Leghorn's accent and style are based on the long-running radio character Senator Claghorn (who appeared in It's a Joke, Son! (1947) voiced by radio comedian Kenny Delmar.
True golden age attention to background detail, right down to the acorn at Henry's feet.
As Henry's pop walks away from him, a yellow streak is briefly seen down his back, indicating he's a coward.
A shnook is Yiddish for a doofus, a stupid person, etc.