Quote from Coach in The Spy Who Came In for a Cold One
Cliff: Hey, Coach, who do you say is the smartest animal?
Coach: I gotta say Francis the Talking Mule.
Cliff: No, Coach, I don't think you're catching on here. That was a real guy talking for that mule.
Sam: Uh, well, it wasn't so much that he could talk, it was what he said, right, Coach?
Coach: Yeah, right, and it was a lot better than that drivel Mister Ed was giving us.
Cliff: Good point.