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The foul-smelling (like a dead rat) combination of sweat, piss. cum, and (on uncut cocks) smegma, and sometimes shit, from men who don't get into the habit of showering or bathing frequently, also, rancid pussy juice from women who don't shower or bathe frequently.
Take a train in New York City at rush hour and chances are you'll be smellin' rat juice somewhere along the way.
by pentozali February 05, 2011
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