Cause they gon' want they money rain sleet hail snow
Your creditors will demand their money regardless of circumstances — so if you are unable to meet your financial obligations they will probably rob and injure/murder you.
This is also a reference to the U.S. Post Office unofficial motto (lifted from the ancient Persian royal couriers): “Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds”
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