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 3, 2006
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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 1, 2006
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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
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a mean mean word used at the north pole with the elves
but your not a cotton headed ninny muggin!

buddy the elf.. whats your favorite color?
Buddy the elf is not a cotton headed ninny muggin.
by kkkkkttttttttt November 18, 2007
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an adjective descirbing one that is a useless dumb jerk
" i can't do anything right, i'm just a cotton headed niggy muffin"
by hncjo094 February 5, 2009
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Taken from the christmas movie 'Elf'. A 'Cotton Headed Ninny Muggins was one of the lowest forms of insult, it's meant to cause offence. A term adapted to 21st century language.
by Jojo92 December 12, 2011
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