Top Definition
the phenomena boys experience in high school after and during staring at all the hot girls body parts

an erection lasting more than 4 hours
Chris experienced History of Erectimy throughout his high school years and was always bumping into lunch trays in the cafeteria.

After his bout with History of Erectimy, Chris had difficulty walking through doorways.

All the girls in the halls gave me a real History of Erectimy
by Penelope Storm August 02, 2011

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