A razor blade is a ox
Possibly short for “box cutter”, or named after oxen, which are used to plough fields in lines like razor blades are used to separate cocaine into lines
This can occasionally lead to hilarious misinterpretations, as when Nas raps “I heard you blew a nigga with an ox for the phone piece” on “One Love”. He does not mean the guy performed a tag-team blowjob on the other guy with a farm animal!
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