Nincampoop 

A person who has done something dumb. At that moment they are a "nincampoop"

Also can be used to just call someone a retard or dumb.

you can also be awarded nincampoop of the day.

(nin-cuhm-poop)

you just knocked over the bbq! you nincampoop!!!

jebbadieuh totally got nincampoop of the day for breaking the paddle...
on i know... that nincampoop

Nincampoop by pejooshkin September 26, 2007

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

Nimcompoop 

A Nimcompoop is somebody who is known as a stupendous moron, or a turkey, and a turkey, is a flightless bird, usually eaten on holidays.

Dahlia: Look at Peter, he is such a moron.

Rafael: Yep. That guys one big turkey.

Zakka: Guys he’s a enormous Nimcompoop.

Nimcompoop by ac1341 January 20, 2020

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

nincompoopsicle 

1. A nincompoop who puts Popsicle up his/her butt!
2. A person that tried a poop flavored Popsicle.

Bruh, Stop putting popsicles in your butt you absolute Nincompoopsicle!

nincompoopsicle by Betty Brave May 27, 2020