A person(usually a teenager) who rarely sees the light of day and spends his time playing videogames ranging from: Modern Warfare 2 to World of Warcraft.
Me: Dude, I was enjoying a casual game of Modern Warfare 2 when this 10th Prestige dropped into my game and fucked everyone up.
Friend: What a fuckin Basement Ninja.
Friend: What a fuckin Basement Ninja.
by KillerKore13 December 12, 2009
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A catch all for the funk that grows on someone's genitalia after they don't wash themselves.
A catch all for the funk that grows on someone's genitalia after they don't wash themselves.
by BasementCheesehead August 23, 2020
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