From the movie "Elf", with Will Ferrell, who is called a cotton headed ninny muggins by one of his elf friends at Santa's workshop.
"Buddy, you cotton headed ninny muggins!"
by HeathxAnna January 11, 2009
Top Definition
One who thinks he is humorous and/or lacks brain capacity; a doofus
Notice how the two previous posters before me are, themselves, cotton headed ninny muggins's?
by Ctrl April 03, 2006
1) A moron, idiot, dumbass, and overall stupid.

2) A human who accidentally got into santa's bag, and was raised by elves, who because of his human form, cannot make toys as fast as the elves and is inferior.

3) An inferior toy-maker.
Buddy: "Why don't you just say it? I'm the worst toy-maker in the world. I'm a Cotton Headed Ninny Muggins."
Elf: "No Buddy, you're not a Cotton Headed Ninny Muggins. We all just have different talents, that's all."
by AnAsian2010 December 19, 2009
Somebody who feels like they can't do something right.
Buddy the elf thinks he is a cotton headed ninny muggins because he can only make 85 etcha sketcha's instead of 1000 like the other elves. He is NOT a cotton headed ninny muggins because he is a human as pappa elf tells him. A good example of a cotton headed ninny muggins is somebody that blows a country to pieces because they THOUGHT they had weapons of mass destruction. What you know somebody that did that? Wow then we all know a cotton headed ninny muggins!
by Cheeky Elf September 21, 2006
a dumb elf, as coined in the movie "Elf"
"i'm nothing but a cottonheaded ninnymuggins"
by dfg January 05, 2004
a diss/insult in a funny, babyish way. It adds humer to any harsh fight and you may hear it coming from a whole range of different ages.
your such a cotton-headed-ninny-muggins! what is your problem
by stick it January 01, 2006
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