A penis - particularly a penis that is curious and/or searching for something. The gorilla thumb might be particularly hairy or thick, although not necessarily. Ideally, it doesn't have a fingernail.
by bullfrogboy January 20, 2009
by JimboSlice13 July 14, 2017
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A physical reaction (thumping or hitting) something due to frustration for lack of knowledge with technology. Aka primal chimp instincts taking over for not being intelligent
After Deloris had tried her password 10+ times, the primal rage ensued and she gorilla thumped her keyboard.
by Donmustache August 19, 2016
Get the gorilla thump mug.by clitcommander69 November 10, 2009
Get the gorilla thump mug.'Ohh yes winter is here and the girls are out and about. There's Gorilla's thumbs all over the place'
by Mongymax November 13, 2007