'brainfull' (noun) Something difficult to understand or process because of sheer mass of information or complexity that you have read or heard.
Derek: Hey join did you understand the equation we solved in math class today?
John: Yeah, but it took me a while, that was a real brainfull.
John: Yeah, but it took me a while, that was a real brainfull.
by PureHeartInnocentSoul May 17, 2019
by Armageddon7432 July 15, 2022