Top Definition
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.
by john.bender59 October 23, 2011

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