Similar to poo poo head a pee pee brain is someone who is full of piss. Pee pee brains are usually pretty good at pissing you off even if you don't get mad easily.
1.Omg that kid is such a pee pee brain.
2. Person 1: Yesterday I was with Jerry and he pissed me off so much that I beat the fuck out of him.
When finance content creators rent out fancy cars and flexcash to seem richer than they really are in order to promote and sell their “get rich quick” courses.