nincanpoop 

from the movie "Wind in the Willows". Often said by the character, Tode.
Used to call someone stupid or silly.

Tode: "they're all nincanpoops, everyone of them!"
Badger: "now, now, dont be mean"

What a nincanpoop, i cant believe she did that to me.

nincanpoop by I spell it as Haylie April 18, 2008

Nincanpoop 

Meaning Idiot or stupid but if your name is Michael it means your the greatest human being of all time

Your a lonely nincanpoop

Nincanpoop by God 10307 June 23, 2020

nincanpoop 

poop that originates from an oompaloompa.

Willy Wonka: "That's a big nincanpoop!"
Charlie: "It sure is."

nincanpoop by Cronz February 21, 2006

nincompoop 

a silly, no brain, fool

Aaron is a nincompoop.

nincompoop by Yen January 5, 2000

nincompoopers 

a group of stupid people

you guys are nincompoopers!!

nincompoopers by snickledumper January 27, 2015

nincompoop 

a person lacking common sense, a person who lacks good sense or judgment

I work with a gaggle of nincompoops, I guess common sense isn't so common anymore.

nincompoop by Ur Majesty July 30, 2008

nincompooping 

The act of

1. doing nincompoopatic things.
2. being a nincompoop.
3. smelling like a nincompoop.

The nincompooping nincompoop was nincompooping around his fellow nincompoops.

nincompooping by Norne November 9, 2010