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a "sandy anus", or "sanus", is a phenomenon which most likely occurs in situations like chilling on the beach, a sandstorm, or any other place where sand shovels up your ass.
Dude fuck the beach, it always gives me a fucking sanus
by Heiny July 18, 2013
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A nerd that doesn't look like one.One that loves to study 24*7 despite looking like a cool person. Studiousdweebdollprettydork
Guy1: brah. Let's go watch a movie
Guy2: Nah.. got loads to study.Have an exam next week
Guy1:OMG. You're such a sanu
by Gru18 June 14, 2016
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