"'Feejee Mermaid' has become the generic term for the many fake mermaids that can be found around the world..."
This article contains information relating to a hoax. According to Cambridge dictionary a hoax is "a plan to deceive a large group of people; a trick."
Rubberado are strange creatures of Wisconsin and Minnesota told by the lumberjacks of the 19th and early 20th centuries. This creature was a porcupine whose spines and flesh were extremely rubbery. It used this ability to bounce across the land. Once the Rubberado was cooked, its flesh became inedible. Apparently, bullets bounced off of its flesh meaning I could be armored and every time it bounced, it laughed.