To understand what it means, you'd need more information! Can you provide any of the following:
* The context where you heard it: Was it in a book, a movie, a game, or a conversation?
* Any other clues: Did you see a picture, hear a definition, or have any other information about "spellamadoodles"?
* What you think it might be: Is it a creature, a food, a type of magic, or something else?
With more information, I can help you figure out what a "spellamadoodle" might be!