There are in fact some objective things your sense of humor can tell us about the state of your mind. Obviously, none of them are good. (Click for full article)
  1. Love Cringe-Inducing Puns? You Might Have Brain Damage
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    Damage to the areas of the brain responsible for analytical processing means that Witzelsucht sufferers not only find the simplest jokes hilarious -- namely, slapstick and puns -- but are also unable to "get" more complex forms of humor.
  2. Difficulty Detecting Sarcasm? Could Be Early Stages Of Dementia
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    It may not be your fault, though. Researchers at the University of California at San Francisco discovered that people with frontotemporal dementia have a particularly hard time detecting sarcasm. Not only that, but other neurological conditions, such as autism, head injuries, brain lesions, schizophrenia, or even a stroke, could be behind your inability to understand teenagers.
  3. Dark Sense Of Humor? You Could Be A Workaholic
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    Psychologists note that workaholics gradually lose their ability to appreciate or create humor. Their sense of humor slowly stagnates into "black humor such as sarcasm, ridicule, or caustic putdowns," which may subconsciously serve to keep "unproductive" non-work-related relationships at bay. Workaholic marriages are much more likely to end in divorce, and children of workaholics are more prone to experience depression as adults.
  4. Take Yourself Too Seriously? You May Be A Narcissist
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    If you suffer from narcissistic personality disorder, you are essentially locked into appreciating a very narrow range of jokes that do not in any way apply to you. Chances are, you know one or two people who fit that description. They'll be the ones to take offense at the slightest provocation -- no matter how trivial or well-meaning -- and will remember your innocent quip as if you ran over their puppy and then threw it in reverse to make sure you got their cat, too.
  5. No Sense Of Humor? You Might Be Delusional
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    Some research posits that we laugh to affirm we're part of a group, so a person who has no qualms about lying to themselves won't hesitate to fake a laugh here and there. To spot the difference, researchers look for something called a Duchenne smile -- an involuntary and genuine smile that happens when both the mouth and the eyes are in on the joke.
  6. Laugh At The Pain Of Others? Oh, Boy ...
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    Milgram concluded that the giggling wasn't genuine glee at the very concept of hurting people, but decent folks unconsciously trying to convince themselves that everything was OK. V.S. Ramachandran theorized that laughter evolved in part as a signal to defuse threats.