Fibbill

Extending the "pointer" finger, the finger directly next to the thumb on each hand, moving it up and down vigorously between pursed lips while emitting a humming noise. The result is a sound similar to humming through a moving fan.
Timmy raised his finger to his lips and added his own humming to the joyous fibbilling group.
by Szam199_9 January 04, 2014
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Fibbilous

A descriptive word used when someone/something is cool, annoying, interesting or aggravating. Has a variety of different applications you can really make it your own.
Shes so fibbilous!
Bro that movie was crazy fibbilous
by Danny Andderson February 20, 2024
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