It's a Mystery, Charlie Brown (1974 TV Short)

Jimmy Ahrens: Marcie

Quotes 

• Snoopy : [mutters something questioning] 

  Marcie : I don't understand, sir.

  Snoopy : [mutters something questioning] 

  Marcie : I don't understand you, sir.

  Snoopy : [mutters something questioning] 

  Marcie : You don't make any sense, sir.

  Snoopy : [mutters something questioning, while Woodstock walks into the house] 

  Marcie : I don't understand you, sir. Good night, sir.

  [slams the door on both of them, but not before Snoopy grabs Woodstock through the mail slot]