Goonter

Any persons unattractive sibling is called a “goonter
Check it out, she has a goonter.
by DownyShart June 28, 2019
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Goonter

Dude did you hear that Thomas has a "goonter"?
Hellzz yeah man I heard that shit was huge!!
by <@$$!>Y March 09, 2008
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