Top Definition
Someone who is completely clueless when it comes to society. E.g no dress sense, no common sense, no street sense.
Friend number 1 : "Look at the state of that absolute chesterfield"

Friend number 2 : "Yeah man he's got no idea has he the goon"
by Lee The King February 08, 2017

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A goonan has a big dick.
Wow you must have a goonan.
by GlauDiablo December 15, 2016

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It's like hoonigan drifting or racing, but for goons. Also
Did you see Rob drifting his big boy tricycle today like a goonigan? That shit was awesome.
by PurplePeoplePower July 12, 2016

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