kkmf

An abreviation for knock knock mother fucker. Used in place of ringing a doorbell. Generally sent via text, but sometimes spoken aloud when entering a room.

I received a text saying kkmf, so I knew John would be walking in the door soon.

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cimf

An abreviation for come in mother fucker. The common & proper response to kkmf. Usually sent via text, but sometimes spoken aloud when someone enters a room.

After receiving a text from John reading "kkmf", I replied "cimf" to let him know to come over without knocking

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