Top Definition
Short form of "Fart Next To You" It's when a person farts (or flatulates) next to you silently and does not admit their deed.
When someone says "name that tune" and lets it rip, that's not farnextia but when someone lets a silent but deadly fart and no one admits to doing it, usually the first one who smells it dealt it.
by farnextia August 02, 2005

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