The son (who had been looking out the window) turned to his mother and asked,
The mother, who couldn’t think of an answer, told her son to ask the flight attendant.
So the little guy walks up to the galley and asks the flight attendant, “If big dogs have baby dogs, and big cats have baby cats, why don’t big planes have baby planes?”
The flight attendant responded, “Did your mother tell you to ask me that?”
The boy said, “Yes, she did”.
“Well, then, please tell your mother that there are no baby planes because Qantas always pulls out on time, and ask her explain that to you.”