When a woman fucks two men that are brothers, gets pregnant, and births the child. Unaware of who the true father is, the two men are both labelled the "funcle." A father uncle.

A Funcle is the act of 2 men fucking the same girl while playing the classic children's test of strength game "Uncle". Hence "Fucking Uncle" or Funcle. It's best played when the woman is on all fours receiving penetration from one player and pleasuring the other orally.

Someone who at first is your uncle and then hooks up with your mom and marries her and becomes your father instead. Combine Father and uncle and you have a funcle. This mostly happens with low income, ignorant redneck families.

a female uncle (different than an aunt)

A cross between a father and uncle. Like when your mom marries her husband's brother or has sex with him.

Usually done between incestual familie's who have no scrupels about who they get it on with or what monstrosities they may produce if they happen to get pregnant by the funcle.

A man who is both one's father and uncle. If someone "has a funcle", you're saying they're really dumb and demented. Persephone from Greek mythology quite literally had a funcle. If someone "marries their funcle", you're saying they will do anything without hesitation.

a very large six-sided vibrator with jagged ends and suction cups.