To expel all knowledge, in no particular order, of a certain subject in a definate space of time.
Jane: How'd the Spanish test Go?
Dick: Mental Ejaculation. I mentally ejaculated all over it.
by Geophree Godnam March 24, 2006
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When your mind and body becomes so overwhelmed with such ecstatic joy while delivering the father of the groom speech that you yell out at the end "I'm having a mental ejaculation of joy" and then drop the mic.

Aka Poe.
This wedding makes me so happy It's a mental ejaculation of joy
by S.Poe April 24, 2017
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