(n) The distracted mental state resulting from a serious need to urinate. Usually resulting in a delay to relieving said need.
I totally screwed up the last 3 answers on the exam because I had Piss Brain.
My Piss Brain was so acute I had a hard time unzipping my pants.
1. A brain which is actually filled with nothing but piss.
2. Some idiot who has pissed on his brains.
3. A good name to call a dunce.
4. Useless fool.
A dumbass who has verbal diarrhoea. (good name to call someone, i.e. your best pal)