by UnboundTrauma July 22, 2021
by qazx528 June 23, 2010
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
by peter‽ February 5, 2022
When a person has moths flying around in their brains, laying eggs in all the old things in their lives and clouding the lights with their bodies and egg sacks causing them to be dim-witted, lazy and unable to see clearly.
Mark is so moth-brained that when we had an actual infestation of pantry moths, rather than throwing out the food where they lay their eggs, he moved it to the other pantry. The pantry is not the problem mark, you are.
by slzrppp November 2, 2020
by echoAwoo May 16, 2022
the act of giving and receiving oral sex/pleasure (at the same time) to/with a person of the opposite sex in a very intense and "nasty" manor.
girl: "I'm bored"
boy: "me too!"
girl: "wanna kill time?"
boy: "what did you have in mind?"
girl: "Brain Swap!!"
boy: "me too!"
girl: "wanna kill time?"
boy: "what did you have in mind?"
girl: "Brain Swap!!"
by Sdot.M June 26, 2009