Turn of phrase meaning someone who consumes food and drink in a manner that is incredibly displeasing to hear. Typically loud smacking, slurping, or wet sound produced from mastication done from open mouth or loud eating.

Origin: Many mukbang youtube creators increase the gain on their microphones so you can hear them masticate.
Alan, can you please close your mouth when you chew? You have mukbang mouth you slob.
by SeraChimera February 14, 2021
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