Means the same as potty mouth, toliet tongue, sewer mouth, etc. That is to say, some assclown who cusses at inappropriate times.
Rhino clit? That's disgusting! That's horrible! You kiss your mother with that mouth, you...you eat with that mouth? Garbage mouth!!!
by Telephony February 1, 2016
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Verb. In the hospitality industry, when a waiter, waitress, busser, dish washer, etc. eats food from a plate left by a customer. Also known as trash mouthing.
I saw the waiter garbage mouth a roll off the tray as he entered the kitchen.
by enigma92000 March 5, 2007
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Verb. In the hospitality industry, when a waiter, waitress, busser, dish washer, etc. eats food from a plate left by a customer. Also known as trash mouthing.

I saw the waiter garbage mouth a piece of steak off the tray as he entered the kitchen.
by enigma92000 March 7, 2007
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