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1.
Actually, the name of a synthesizer system created by Robert A. "Bob" Moog. He created the famous Minimoog, the Polymoog, the Multimoog, the Moog Modular system and the Moog Prodigy, to give only a few examples.

The Moogerfooger series consists of several pedals and accessories, like e.g. a lowpass filter, a ring modulator, a phaser and a control processor.
This new Moog Moogerfooger filter system sounds absolutely fantastic!
by joerg September 22, 2004
 
2.
a chocolate filled potato.
I ate a Mooger Fooger.
by Stevetaco62 March 17, 2011