A long time ago, a country doctor was consulted by a woman who thought she might be pregnant, but, taking account of her age, this doctor also diagnosed trapped wind. She went on her way and the doctor didn't see her for something over a year; she was wheeling a pram, and it contained a baby (being designed for the purpose).
"Oh... I see you were pregnant after all," he said, in some surprise.
"Not at all," she responded, "thon's jist a fart wi' a hat on it."

Based on a True Story.