1 definition by The Lawnboy
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.
My best friend and I thought with a little luck and a lot of beer we had a good shot at the Funcle with my 2nd cousin, Suzzie.
by The Lawnboy May 2, 2007