What is Fart-fut-nougen?
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Spelling?
The gist is, a Fart-fut-Nougen is a Fart raised to the power of two (Fart^2), when an unfortunate individual farts twice in a row, and consecutively, one right after the other that is sound like a drumbeat, that is a Fart-fut-Nougen.
*Plluuttt-BRrrrruuttt*
"Dude man, wtf? Don't fart-fut-nougen around' ere!"