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Adult friend of your family that you've come to thing of as an uncle.
That's my fruncle. He isn't really my uncle but he's been a friend of the family my whole life.
Fruncle by Serialseb June 12, 2007
An adult male who acts like part of the family to is friends' children, and usually the most entertaining adult at any get-together. Derived from friend+uncle
Go play ball with Fruncle Matt. Mommy's getting her drink on.
Fruncle by LexiCodger December 17, 2011

furburgler 

A person who enjoys eating furburgers aka hairy pussy. They are so deperate that they may even go to the length of breaking and entering the pants of a holder of a furburger just to eat it.
God damn that kid is really a furburgler!
furburgler by Austin April 18, 2004
You tell me........ this word is defined solely by the one who uses it and for which purpose it is used.
A.K.A - use at your discretion :)
1. "Fuzzuncle!"
2. Snow me your fuzzuncle.
3. No I didn't say fuzzy uncle.
4. "Oh fuzzuncle"
fuzzuncle by Pamomy April 20, 2007
A friend of the family that has taken on the role of the uncle.
Yo you see Matty G. he's my daughter's Fruncle .
Fruncle by X-Ray87 May 24, 2016

Fumbunkler 

Fumbunkler is a light hearted jab that one would typically direct towards friends.

This word is never to be mistaken with "bumfunkler"
"Hurry up you fumbunkler, we're going to be late for the train"
Fumbunkler by Count Noosula April 16, 2019