What is Headcase?
1.
mentally deficient, spaz, nuff nuff, fruit loop, nut case
Michael Jackson is a headcase
2.
(noun 1)
a mentally unstable person who acts irrationally or foolishly; an eccentric person
(noun1)
"They put him in a mental institution because he was a headcase."
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3.
(noun2)
a colloquial term used to describe a mentally sound person who likes to act foolishly for fun.
(noun2)
"He was being a headcase again."
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4.
A mentally deficient person, often due to prior or on-going drug use. Often does stupid things. Can also describe a very forgetful person (again, often due to present or previous drug use).
I can't believe he did that, AGAIN, he should have learned from the last disaster! What a headcase!
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5.
A crazy, insecure, insanely jealous, and controlling woman. Synonym - Glenn Close's role in "Fatal Attraction". Alternate Synonyms - see Bitch, Stalker, My Ex.,
My former girlfriend called me 3 separate times on my cell - back to back to back - while I was meeting with my boss, after each time I told her specifically I was with my boss. I was nearly fired. She was not right in the head; I don't care how good that booty was, because it was not good enough to deal with that headcase!
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6.
A person who continually does stupid things due to some head injury leading to lack of intelligence and sometimes gayness
Andrew is a headcase
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