Act of spending one's time with very complicated theoretical problems which, when solved, do not serve for anything useful or practical.
J: Did you understand the sense of the problem in theoretical quantum mechanics which we solved in our course today?
P: It was just some brain-wanking. It does not have any practical meaning.
P: It was just some brain-wanking. It does not have any practical meaning.
by xxteapot November 30, 2011
A phenomenon, that occurs in most teenage boys. Who literally think about wanking all day every day, apart from when they are actually wanking. Wank Brain means the teenager is in a constant state of thinking about and longing for the next wank.
Mother to her friend. Timmy always seems so distant, he hardly communicates . If I ask him to do the dishes, he never does and says he, didn't hear me ask him. Friend. It sounds like he has Wank Brain, he will grow out of it eventually.
by CanucksEdge July 20, 2022