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A disease that causes everything awful to happen to you at one time. Often times, falling down stairs will occur.

Side effects include: migraines, vertigo, blindness, a killer british accent, being home schooled, and everyone in the hospital knows you on a first name basis. Also, you have a room reserved in a hospital at all times.
Guy 1:Dude poor guy! He hasn't been in school for months!
Guy 2: Yeah, he has Declan disease...
by weej and keej May 14, 2011
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