a slang term used for male masturbation.
"what took you so long, were you out back doing the five knuckle chuckle?"

"she was so hot, I had to do a five knuckle chuckle when I got home."
by Maddie McGregor January 20, 2008
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I saw dis chill on T.V earlier, slut made me wanna do the five-knuckle chuckle.
by Thorns069 June 3, 2004
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