The act of producing and communicating (in speech or writing) entirely expendable, untenable, unrealistic, baseless and often complacent ideas on all sorts of topics.
A: Have you by any chance read Erich von Daeniken’s ´Chariots of the Gods`, in which he claims the tomb of Mayan king Pakal actually depicts an astronaut in his spaceship?
B: Yeah, man. Daeniken clearly is the Charlie Sheen of brainwanking.
B: Yeah, man. Daeniken clearly is the Charlie Sheen of brainwanking.
by john.bender59 October 23, 2011
Any intellectual/academic discussion meant more to show off the intelligence of the speaker than to prove a point or educate anyone listening.
Freudian literary criticism is pretty useless, to be honest; eventually they stop talking about literature entirely, in favor of pointless brainwanking.
by kiefda03 June 09, 2010