Almost every class has one. They just don't go away.
Their purpose on this earth is to annoy and pester. they don't have the intellegence to do much more.
Do you sit by him? I remeber the worse "class idiot" experience in my college education was the moron who not only wouldn't shut up, but sat next to me and had horrible breath. Literally had nasty, rank sewage, fuming dog feces breath... *shudders* Made me want to by him a tooth brush just to get me through the class...
Oh yes, I feel your pain
Casperilla Sedai