A term used in the realm of Industrial music to define a deceiver. One who is an expert of manipulation who uses others to control and get what he/she desires. The term "Mouth" refers to the ability to speak and offer opinion and demonstrate free well while "Eater" is the consumption of this freedom, or the taking away a person's individuality. The song "Moutheater" by the American Coldwave Industrial band 16 Volt, is this word's claim to fame in the realm of Industrial enthusiasts.
"Erika told me she would be there for me, she left me with nothing and betrayed me. She was a Moutheater and I couldn't even see it
by King Herne March 07, 2013