A friend who is being particularily shitty or acting like an asshole.
Helen - "Sorry I couldn't make it, but did you and Carol have fun at the party last night?"

Susan - "I guess... but Carol is such a franus. 10 minutes after we show up, she got so drunk she barfed all over the appetizer table and then tried to make out with Sally's husband.

Helen - "Awesome. She's such franus sometimes."
by wordturd79 June 29, 2009
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"Oh boy did you see that franus cock, it must have been growing for years to achieve that franus cock!"
by Nude man dan November 15, 2016
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