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Literally, when somebody's brain has stopped functioning such that they will never regain conciousness, hence coloquially somebody who is idiotic, dumb or clueless beyond belief. Similar to "too stupid to live".
You dented my car, you braindead fuck!
by Linton July 11, 2003
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2
The literal death of the brain, brought about by severence of the spinal cord or any major brain damage. There is argument as to whether or not brain death constitutes real death as some minor signs of life may still be seen, though the patient typically can't live without a respirator after brain death.
Marla is now brain dead.
by Schismrobo December 19, 2007
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3
the link from reality and fantasy are broken. there is no pilot in the cockpit if you know what I mean. the results of too many drugs can do this to you. you can be born this way. whatever the reason, you state things out of your ass without a reference, and you don't know nor care how accurate your statement is.
After I took over 10 years of bong hits, I have been left virtually brain dead, leaving only the cartoon network as a compatable reference.
by maxpacemph March 14, 2006
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4
Gory zombie horror film of extremely high calibre by Lord of the Rings' Peter Jackson and Fran Walsh. Great stuff.
Braindead is a great film, I liked the bit with the lawnmower!
by cakeandfinewine September 23, 2004
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5
A increadibly idiotic individual who hasn't a sustance for anything that is going on. He or she is stupid, retarded, mental, ignorant, annoying, funny to make fun of, or any combination of the previous terms.
by CrazyBob62 May 10, 2006
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6
1. Used to describe people who make bad decisions, I.E. have no brain. Can fill the place of words like dumb, dull, and stupid.

2. A nickname for Iowa's Governor Branstad
Ex: "Guess what, Braindead cut education funding again," said John.
by Truth Jester April 13, 2011
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7
to fuck someone in the ears so hard that they lose braincells in the process.
Jason: Sunny, can I braindead you?
Sunny: Sure thing hun!

*30 minutes later*

Jason: You alright Sunny?
Sunny: I can bake I can bake I can bake
by the savageness April 13, 2011
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