Okay, so Coco wins in this one, but still.
It's my favorite kind of joke, and it was enacted before my eyes.
Coco was saying something about "When pigs fly" and I asked him where he heard it. He said Madge told him. Then I asked him what it meant and he said, "It means never, because pigs can't fly."
At this point Madge piped up with, "Yes, they can. On an airplane."
And before I could say anything, Coco came back with, "No, they can't. They don't have a suitcase."