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."
It means what the fuck or hell this is a more friendly and appropriate way of saying it for kids.
A sister and Her twin brother were walking in the park when suddenly they came across a decapitated fox , the twin sister then screamed out “what the jackdoodles“!
And out popped their older sister with the head of the fox laughing to her knock knock curly wurly shelf !
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!!!!