Thpeech Impediment

Ben was getting some applesauce for Buster, and he called it "applethauthe." Sunny, who has a lisp, tried to correct him. The following conversation was rather entertaining, as it went something like this:

Ben: Do you want some applethauthe?
Sunny: No, Daddy, it'th not applethauthe, it'th apple-THAUTHE.
Ben: That's what I said, applethauthe.
Sunny: (trying very hard) No, it'th apple-THAUTHE!
Ben: Oh, you mean applesauce.
Sunny: Yeth, that'th what I thaid, applethauthe.