Top Definition
When you're running and your penis starts flapping in the wind
"Dude, how was the race?"
"Pretty good, I had some serious flapdoodle though."
by rektmateo August 13, 2015
A long, thin, flat piece of poop. Something that most commonly a small dog makes that you will never see until it's on the bottom of your shoe.
Annie, the schnoodle just made a flapdoodle.
by JinnyLane July 06, 2011
Someone or something pretending to do something or be useful. A thin mask of effort behind which a total slacker resides.
After all that gab, you have really accomplished flap doodle.

bob villa is a perfect example of a master at flap doodle

by Str8_scotch February 23, 2008
Also known as an alpha sorter. It has flaps to sorte documents and papers alphabetically
Hey Dale, put this App. in the Flapdoodle, MORON!
by Warrants November 08, 2008
if one is to commit a flap doodle, they would be flap doodling. Flap doodling is to participate in an act that your parents would not aprove of. i.e. sex, drugs, alcohol, wacking off etc.
"I will let you have your flap doodle now... but next time, let me be clear, there will be no flap doodling on my flap doodle time!"
by I.LOVE.WAFFLES. June 07, 2009
Nonsense; To act stupid,idiotic, Nonsensical
He's Acting like a flapdoodle by jumping off the bridge
by Brett January 28, 2005
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