An eccentric, ditsy, arcane, funny, person. Is generally a goodnatured and sympathetic person. Not to be confused with a "wackjob," who can be nasty,or violent.
Aunt Rosemary's fondness for multiple cats, Minnie Pearl hats, and alien abductions was never a source of shame for Fred, but rather a source of pride. He thought it surely must qualify her for the mythical "Wackadoodle Hall of Fame."
Taking two very intelligent breeds, example being the Golden Retriever and Standard Poodle, and breeding the brains right out of them, hence the name wackadoodle!!!!