Morris and Duke

Morris the cat and Duke the dog were talking with each other. Morris: "What's up Duke? You look like you're in pain." Duke: "Mmm er mmme errmmm." Morris: "What'd you say? I can't understand you." Duke (pointing off to the side): "Uhhhhh mmmm eeeeerrrrruf." Morris then looks off to the side where he sees his cousin Felix running away with something hanging out of his mouth. Duke (still pointing): "Thhhhh eeee rrrrrrf uuuhh!" Morris: "Oh, I get it. Cat got your tongue huh?"