When your brain starts to ache due to stress on your eyes.
If you try look at the back of your neck for about 15 seconds you will experience one.
They are fucking annoying.
Thought: Hey what's that lump on the back of my neck? I'll just check
15 seconds later
Brain Ache! Fuck that feels annoying!
A condition under which the sufferer's brain physically aches. The brain shuts down normal functions and refuses to work with you to achieve anything.
Leads to confusion, inertia, drowsiness, blank staring, unresponsiveness, nonsensical gibberings, numbness of the senses, difficulty in forming or grasping simple thoughts and concepts and immobilisation of the body.
Commonly a result of overindulgence in intoxicants of various forms, lack of sleep and/or workaholism.
Person one: Heya, how're you today?
Person one: Whats up? Are you ok?
Sufferer: uhhh errrr brainache... meh
Used as an insult to denote somebody of limited cognitive power. The implication is that they find the act of thought so difficult that it causes their brain to ache.
Have you figured it out yet, brainache?