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Two exceptionally large people trying to skinning dipping.
I just saw two 400 lbs. people running buck naked down the dock into a full on cannon ball creating a 10 ft high wave. That was some serious ChunkyDunky
by Supa Donkey March 22, 2012
When your constipated and have to take a huge chunky shit.
"Man I havn't shit in 5 days, its time for a chunky dunky"
by JakeSAUCE September 18, 2006
An alternative to skinny dipping for people with high BMIs.
I don't skinny dip, do you wanna chunky dunky?
by nklatt August 30, 2010