What does FOS mean?

full of shit

FOS

Other definitions of FOS:

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How to use the term
FOS:

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More slang terms:

STFUA

STFUA

shut the f**k up already

DIKY

DIKY

Do I know you

SUAGOOML

SUAGOOML

shut up and get out of my life

ROFLKAS

ROFLKAS

Rolling On Floor Laughing, Kicking And Screaming