1 definition by McNultyfied

Top Definition
The inability to study due to decreased blood flow to brain due to excess blood flowing to the penis. Academics often have fantasies of hot females naked thus distorting their trail of thought. Often leads to masturbation which is followed by a productive period of study proceeded by fatigue.
"I was just about to start Anatomy when I discovered I had a study boner"
by McNultyfied January 30, 2012

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