In the 18th century, a woman actually convinced doctors that she was giving birth to rabbits.

“Mary Toft reportedly ‘gave birth’ to up to nine of the fluffy creatures at a time! Doctors were convinced that she was telling the truth until they found pieces of corn inside the stomach of one of the rabbits, proving that it hadn’t developed inside Toft’s womb. It turned out that she had been manually inserting the rabbits to make the ‘delivery’ look as realistic as possible. Ew.”