A highly advanced stage of boredom. To be more bored than someone else.
Ex.
A. "Im bored."
B. "Im borededer than you."
What happens after math class. usually assiocated wth bloodshot eyes, unntelligible markings in your notebook, and a continous low droning sound stuck in your head.
"Wow what happened to you?"
" Just got out of math class.........boreditis attack coming on..........."