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1.
Fornicating in/on company used work areas such as slop-sinks, walk-in freezers and utility closets.
1.) Bobby: "you take that girl home from the bar and give her the ol' sweet dick willy?"

Joe: "Nah, my wife was waiting for me at home so I took her in the back room and slop-sinked her."

2.) "I got fired cause the security cameras caught me slop-sinking while I was on the clock."
by Slop-sink March 25, 2010