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Peebrain 

Get the nickname of peebrain after pissing yourself in the middle of the night 3 times in a row and denying you did it even though you’re notorious for doing it
Jack brown is such a peebrain
Peebrain by Garrett Davis October 2, 2021

Peebrain 

When a girl is peeing on the toilet and gives you head.
Dude, Jane gave me peebrain last night.
Peebrain by MackDaddy14 December 18, 2020

peebrain 

Means that a person brain is the size of a pea the kind you eat as a vegetable.
For example, a peebrain would have to look up what peebrain means and would think I was talking about urine, or telling my mind to pee.
peebrain by Joe Junior February 17, 2004

peebrain 

A person whose brain is of no use to them. A stupid person, airhead, dumbminded, idiot, useless, a fucked up person.
Don't you know junior 2+2=4 not 5 you "peebrain".

That boy's braincells have turned into liquid almost as if he has no brain cells and deserves to be called a "peebrain".
peebrain by Joe Junior February 17, 2004
An individual who sticks to a belief or theory even after the through debunking of that belief or theory
that bigot is a real pusbrain.
pusbrain by BIE BIE June 24, 2006

peebrain123 

she one of the funniest, and sweetest people ever! she always is wanting to chat with her mutuals and is astronomically funny. she never fails to make her followers smile <33
omg peebrain123 is so kind and funny!!
peebrain123 by maraudersstan August 23, 2021