The anxiety, worry, despair and insanity a person may feel or deal with regarding any small or large family interaction or assembly; this is usually based on the perceived right and responsibility of kin to be annoying, to be annoyed and disgusted with you, to be rude, unsupportive, condescending, derogatory; to question and disapprove of everything you think or do “on principle”; to basically butt heads and accept this mutual condemnation because “love means never having to say you’re sorry” (the only situation in which this idiotic & insane epitaph could possibly apply).
Vivian dreads her annual family reunion picnic so much that this familial dementia mutates into insane schemes, such as supposed tropical diseases or covert government secret missions, the details of which she cannot reveal even to her mother, in order to keep herself from having to attend.
by ChezCinque August 17, 2011
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Someone who forgets too much.
Jason: Hey what time does the game start?
Jack: Ummmm.... I forgot
Jason: Wow jack you're a real Dementia Patient
Jack: I know :(
by Obligitory Pseudonym October 21, 2019
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A state of disorientation resulting from excessive combination substance abuse achievable only by the large available quantity of free drugs/alcohol found at parties.

The symptoms include (but are not limited to) :

-Forgetting time/place/date
-Oversleeping for mandatory events (Work, school)
-Losing otherwise sacred items (keys,wallet,phone)
-Calling people you've done a very good job avoiding for years, with an uncalled for sense of affection
-Waking up in strange, unsleepable places
Bro 1: *Bursts in room with 24 pack* "YOU READY FOR THE THIRSTY THURSDAY PARTY WEEKEND BRUH"

Bro 2: "Dude, its Monday. Arent you supposed to be at work? I think you got party dementia bro... where are your pants and why are you covered in mayonnaise?"
Bro 1: *sobs*
by Vaulterofmanylavas October 4, 2016
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Stress Dementia describes the loss of memory, mental focus and acuity that occurs when a person experiences heightened levels of stress.
When Clark was fired, he couldn't even remember his own cell phone number due to stress dementia.
by Hopkins21 October 3, 2017
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Penile dementia is the state of becoming so senile that you forget it is not socially acceptable to grab the asses of strangers.
Sorry about Grandpa. He's suffering from penile dementia.
by Gina Cochina July 15, 2010
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A serious cognitive disorder exhibited by large corporations with incapable leadership, and lacking a coherent strategy.

It is normally required to be present for at least 6 months to be diagnosed; cognitive dysfunction which has been seen only over shorter times, particularly less than weeks, must be termed Corporate Delirium.

Symptoms of Corporate Dementia can be classified as either reversible or irreversible, depending upon the cause of the disease.

Daycare centers offer supervision, recreation, meals, and limited health care to afflicted board members, as well as providing respite for employees.
The conduct of British Telecom following the revelation of the Phorm mass surveillance scandal could be diagnosed as 'Corporate Dementia'.
by Ian Livingston September 25, 2009
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to be suffering from a priapism, that is a continuous erection of the penis. This ailment is both painful and socially embarrassing.
Trevor was disappointed: he had to miss several West Ham matches because of chronic penile dementia.
by Dunky Oggins November 16, 2003
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