(n.)1. An Amphibosian title literally meaning "One who does not sleep with my superior officer"; equivalent to a wife or a common-law in English.

2. A smizmar who is asked to join a family
Amy: "Kif just asked me to be his fon fon roo!"

Crowd: "Congratulation....?"

Hermes: "What the hell does that mean?!"
by arzasmi August 22, 2008
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Someone who claims to be a Don, but are not. A fake don.
Richie is such a Fon
by NYDonsPal May 9, 2019
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Freak of nature: not a desirable quality. A 14 year old girl who is a bitch, whore and an aneorix slut who has not real goal in life.
Kate Van Der Kann is a fon.
by noodle September 6, 2003
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adjetive, a Freak Of Nature; some one who is retarded/a wierdo
Tom:Fred is like such a FON he collects hair for christs sake

Jake:totally dude don't stand to close to him too or he will try to bite....
by weeny@@@ September 16, 2008
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FON; (fon)
n.
1. Fon (fon) Abbr. (Freak Of Nature)
a person or animal that is born or grows with abnormal physical features or with a disfunctional personality.

2. Someone who is weird.

Created by Owen Towell & Lloyd Williams.
BOY1: "she tryed kissing me, him, and you lastnight"
BOY2: "oh my god, what a fucking fon."
by OT&LW December 4, 2010
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an act of sharing a bed with a member of the opposite sex while they keep their jeans on.
I'm having a Fon night tonight...
by Fist Pumping Sisters February 17, 2010
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