a very cool thing that professor yaffle says when he can't believe something. go bagpuss!
ahh fiddlesticks and flapdoodle!!
by :poisonedheart: January 14, 2004
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My friend says he got emerald armor in Minecraft...
What utter flapdoodle!
by Leroop December 21, 2021
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A past time or type of fun that is often disapproved by others, especially authority figures.
Example from PPP (Potter Puppet Pals)

Oh Snape, let them have their flapdoodle.”
by stupid slytherin June 9, 2020
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A small implement having a broad, flat, flexible blade that is used to mix, spread, or lift material.
A flapdoodle is used to flip a fried egg
by Blacklamby November 27, 2014
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A state a person in when they're stressed about a situation which is difficult to resolve.
"I just can't figure out how to do maths and my exam is tomorrow. I'm in such a flapdoodle about it."
by Lilibet123 September 29, 2018
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