Cotton-headed ninny muggins 

Someone who needs to wash their rectum

"you are a cotton-headed ninny muggins"

Cotton-headed ninny muggins by CASP3H September 2, 2023

Cotten headed ninny muggings 

Is an insult to make the audience stare and question what you said. In other words a really akward and funny insult.
LMAO :

OMG! your a freaking Cotten Headed Ninny Muggings!

Cotten headed ninny muggings by Jemmy Zombie Barton February 18, 2010

cotton-headed ninnymuggins 

dumb or foolish. ninnymuggins doesn't really have a meaning.

its a funnier way to say silly

sorry i'm late, my car was being such a cotton-headed ninnymuggins.

cotton-headed ninnymuggins by scuba steve December 23, 2004

Cotton headed ninnymuggin 

A lazy individual who can’t pull their own weight. Calling someone a cotton headed ninnymuggin is the equivalent of calling a blacks person a Nigger.

Which one of you cotton headed ninnymuggins smoked my last pack of newports and drank my malt liquor. I’ll bust a cap in your cotton headed ninnymuggin ass when I find you

Cotton headed ninnymuggin by White Christmas May 13, 2022

cottonheaded ninny-muggins 

What Ninja called Dr. Lupo

Dr. Lupo is a cottonheaded ninny-muggins

cottonheaded ninny-muggins by EmeraldRacer June 28, 2018

cottonheaded ninnymuggins

a dumb elf, as coined in the movie "Elf"

"i'm nothing but a cottonheaded ninnymuggins"

cottonheaded ninnymuggins by dfg January 5, 2004

Cottonheaded Ninnymuggins

A bafoon; someone who makes a simple mistake or falls for a childish gesture. A fool of sorts.

"Im such a cottonheaded Ninnymuggins for not realizing that!"

Cottonheaded Ninnymuggins by TheWillBird September 3, 2018