More often than not, the exact same quotes from both celebrities and popular movies of the time would be referenced verbatim by different characters in several different cartoons.
"Ahhhh, shaddup!": Often used by Forghorn Leghorn and Sylvester, but there are occasions where other characters (Porky, Yosemite Sam, and a few minor characters) will use it for themselves.
Foghorn is notorious for adding I say, in the middle of his sentences, especially when addressing someone.
"That's a joke, son!" (This catchphrase was one of many character traits borrowed from "Senator Claghorn," a character on Fred Allen's radio show played by Kenny Delmar.),
"Nice boy but he doesn't listen to a word you say".
"Look at me when I'm talking to you boy/son/gal!"
"Pay attention boy/son/gal"
Henery Hawk:
"I'm a chicken hawk. I'm after chicken."
"Are you gonna come quietly or do I hafta muss ya up?
Sam usually declares who he (or his alter ego of the week) with a pretty descriptive adjectives. He's also prone to spitting out Angrish when he's miserable, especially in later cartoons.