A person who is not trying to enlighten anyone, they're trying to prove how intelligent they are without understanding the intelligence of their audience. They never get to understand their audience because they're to busy concentrating on their next brilliant statement.
I looked around the class and seen the look of confusion. Professor Smith is a mental masturbator. He is mentally masturbating over the heads of his students.
by tahirjahi July 4, 2010
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Overly intensive self gratifying procrastination, thought and contemplation for a subject not necessarily warranting such effort.

"Let's quit the mental masturbation here, its a waste of time..."
by Diamond Tee April 9, 2009
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When one is confused and spends more time then necessary mulling over the multitude of variables that come into play when making decisions.
Much like self pleasuring, the vast amount of thoughts that pertain to the situation in which you are trying to make the decision flood or overwhelm your thought process/senses thereby causing you to become consumed with nonsensical thoughts that end up wasting yours and others time.
When Joe finally caught up with the rest of the gang they wondered what had taken him so long,

he replied 'I had to listen to Amy mentally masturbate over which iphone cover to buy'
by Chilcotin Buddha January 7, 2014
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Term used by visionless people for the groundbreaking ideas that will shape the future.
What? A box that can carry voices on a wire to another box on the other side of the world? Dude, that is just mental masturbation.
by Pipe Downn March 19, 2013
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The act of engaging in impractical/nonproductive mental exercise / thinkings / writings / etc., through which a practitioner only comforts oneself mentally. Such acts don't lead to any constructive results what so ever in the real world; some might even imagine oneself being transformed into superman, or simply the opposite sex, etc.
In short, it's just bs/crap.
Example1:
Guy1: My boyfriend went abroad so I can take over all his stuff and start anew.
Guy2: Dude, you're the same person all along; stop that mental masturbation and get the hell out of my sight.

Example2:
Guy1: I think biological evolution is bull, but mankind can evolve to become God.
Guy2: Dude, you're all fucked up; you can go on with your mental masturbation, but stop bordering me anymore.
by lionhead May 28, 2007
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The act of imagining unreal or false things and taking them as true, and / or deliberately interpreting a fact, or acting in a wrong way, to evade a reality, boost your ego or twist a situation to your convenience.
"That girl think I like her because i invited her to my party, that's pure mental masturbation"
by Falcon64 April 30, 2018
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To perform some activity, typically IT related, where performing the activity gives the performer almost sexual pleasure while doing it, yet nothing of any value or lasting value is produced. Mental masturbation is reasonably acceptable in the privacy of the performer's home, but not on their employer's time. Mental masturbation may be the reason for overly complicated and hard to understand solutions being implemented in one company, despite simpler and more commonly understood solutions being used at a number of other companies in the same industry.
To workmate, on Monday morning, "Guess what I did over the weekend! I rewrote Linux in FORTAN! Cool huh!"
Workmate, unimpressed, "That sounds like mental masturbation to me."
by Shylock Merchant September 30, 2006
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