Top Definition
The act of wearing no underwear under your clothing. Similar to commando but only used for females. The fasn refers to the bra and the kewler to the panties. Therefore it is possible to just go fasn, or to just go kewler, or simply both at once.
Every thursday Emily goes fasnkewler with her tuba section.
#commando #free balling #free flaping #underwearless #no underwear
by Sean Atkinson November 04, 2007
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