F.o.s.
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Abreviation for Full of Shit
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Code word for full of shit to get you out of trouble. You say it to someone and they just look confused when other people might realize what it means. Can also be pronounced Fos for short.
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Acronym for Fuck On Sight. A type of individual when seen by another, one would be willing to have sex with without knowing anything about them, not even their name.
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