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Sperm donor who takes the role of an extended family member in the resulting offspring's life.
There were four adults who took the kid to see the pediatrician -- two parents, a grandparent and the spuncle.
spuncle by family boy January 13, 2009
Related Words
A hip portmanteau for Step-Uncle. Also applicable to any other step-relatives, i.e. Stousin, stister, Stad, ...etc.
My Step-Dad's brother cooked dinner last night, we call him Stuncle Albert.

My Stuncle be actin all dumb n stuff.

Me and Stuncle Craig drank 40's and watched the Winter Olympics last night.
Stuncle by StuncleBuck December 28, 2012
The term commonly used to describe violently smothering your oppenent's face with your sweaty ass-cheeks after being involved in vigorous physical activity, thus creating a sweaty ass mess for their face.
Yesterday, after a few hours of cardio workout, I smuncled my brother Winston.
Smuncle by Beee Veee February 7, 2010
When a mom/daughter team marries two brothers...the wife's hubby is her spouse and uncle. Ergo, 'spuncle'

Take that, MB!
'I love you, my little spuncle'
Spuncle by ShoeGirl119 September 1, 2011
A person who has multiple nieces and nephews.
Do you know Sankalp?
Yes, he's my suncle
Suncle by Peedletheneedle July 27, 2020
I thought steve was my cousin but he’s actually my stuncle
Stuncle by Big black al November 23, 2017