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The "disease" that begins for eighth grade boys and girls towards the end of the year. Symptoms include: lower grades in classes, excitement towards high school and summer, and not bothering to do homework/pay attention in class.
"Damn, I think I'm catching Eighth Grade-itus!"
"Don't worry about it, dude. Everyone graduating from middle school is!"
by nyaha2 May 07, 2009
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