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Thinking of naughty things you could do to a girl without popping a boner.
Gabe: "Dude look at Amber dance."
John: "Yo! I had a Mental Boner looking at her."
by Candles18 July 08, 2011
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2
it’s like a regular boner but for your brain and is mostly revolves around a quality that you admire in someone.
The fact that she fills my mind with ideas gives me a mental boner.
by YuOfTheNight January 08, 2020
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