The Simpsons1989

Homer:
[High pitched] Hello, Mr. Burns. This is your mother.

Smithers:
[Whispering] No.

Mr. Burns:
Guh. Oh, hello, Mater. Uh, sorry about pulling the plug on you and all. Who could have known you'd pull through and live for another five decades? Oh, is my face red!

Smithers:
[Whispering] Mrs. Burns is 122 years old, so try to sound more desiccated. And she doesn't call her son Mr. Burns!

Homer:
[Raspy] Son, this is Mrs. Burns. I just called to say, I don't love you. You are a bad son, Montel.

Mr. Burns:
[Appears beside Homer] So! Impersonate my mother, will you? And you Smithers! You must have put him up to it!