A horribly debilitating birth defect where a person who is of very large stature has an average sized penis. The problem is that the average sized penis looks tiny compared to the persons huge body.
Girl: Damn you have a small dick
Guy: Bitch! its 8 1/2 inches long. I'm 6'8" it just looks small.
Girl: Sorry I didn't realize you were afflicted with Shaquille O'Neil Disease.
by Patient zero February 12, 2006
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