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!