Burning Brain
When all you can think about is about Burning Man even though you have a job, deadlines, a wife, a mortgage, pets, etc. The condition of not being able to focus on anything else but Burning Man.
"Baby , I'm so sorry I forgot to mail in the mortgage check this month, I've got Burning Brain."
Brain burn
When a person sees an event or an image that is so horrible they will never be able to forget it.
I walked in on my parents having sex and got instant brain burn!
Brain Burn
The sensation of severe burning in your sinus when something nasty makes its way up there, for example, horseradish, and even worse, wasabi.
Oh wow, this bowl of noodles looks good, lets put some wasabi in it...*slurp slurp*...OH GOD MY SINUSES!!!BRAIN BURN!!!