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When you have a dick so far up your ass that it hits your brain and causes an arrogant mindset in which you can never be wrong. Commonly seen in people who have failed in some area repeatedly, such as school, dating, etc...
Joe: "Wow, Tim has been really cocky and arrogant lately. What's his deal?"

Blake: "I think he has Narcissistic Dick Disorder."
by MLGPingu September 01, 2015
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2
When you have a dick so far up your ass that it hits your brain and causes an arrogant mindset in which you can never be wrong. Commonly seen in people who have failed in some area repeatedly, such as school, dating, etc...
Joe: "Wow, Tim has been really cocky and arrogant lately. What's his deal?"

Blake: "I think he has Narcissistic Dick Disorder."
by MLGPingu September 01, 2015
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Get a Narcissistic Dick Disorder mug for your friend Trump.