Nutrumbler

When your sitting down and your balls are a tad sweaty and you fart and the fart causes your nuts to rumble.
I was in the middle of a gaming session and i pulled a nutrumbler.
by Migit109 June 10, 2010
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Nutrumble

The act in which one swims under another person between their legs and blows bubbles
ohh that nutrumble felt so good! Yea I know dude!
by Yurr momma June 20, 2009
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