And as usual she asks him for something which she knows she’s not going to get.
“Dream on!” he replies.
“Yeah yeah I know – when cows fly.”
“Not cows, pigs!” he replies.
“Technically, cows are heavier than pigs, so it’s more improbable that they will fly, so .. ”
“Do you know how much a Boeing 747 weighs?”
“I have a vague idea, but there is the law of aerodynamics which comes into the picture there. You cant drag science into nonsensical arguments. That’s not fair.”