Top definition
The instrument created by your anal cavity; as in 'harmonica'. Making yourself fart. Using the rare ability to suck air up one's anus and farting it out to produce consecutive deep, full tones. >Warning the use of the gastronomica could cause a sudden need to crap.<
Jim Wilson can play his gastronomica like there's no tomorrow. 'Midnight Honkytonk Stroll' by Fecal Spectrum is awesome 'cause they use the gastronomica.
> Visit Jim and Fecal Spectrum at www.myspace.com/fecalspectrum <
by G. 'WonderBoy' B. December 06, 2008
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