Is you a cat or a mouse? Keep them rats out the house
Snitches get stitches or get killed. He doesn’t want the Rats/Mouse in the house. He wants the superiors aka Cats.
Also, clever wordplay and a cruel euphemism referencing black slaves. “Rats” are an inhuman and condescending reference to black slaves. In this line, a white slave owner is ordering that black slaves must be kept outside in the slave quarters and out of the house.
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