Ambiguous phrase, stands for fuck and party, but told to an outsider (girlfriend) as fuckin' party."
"Let's FNP" or "Lets fuck and party"... sounds like "Lets fuckin' party".

Boyfriend's Email: "Lets go out tonight and FNP"

Girlfriend: "What's FNP?"

Boyfriend: "Fuckin' party!"
by Froglemonade November 29, 2009
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FullNosePower
I want FNP so I can get things done!
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