Closed Mouth Player ( you keep everything lowkey about who you are messing with or having sex with ) can also mean you are keeping quiet for someone else who is a โ€œplayerโ€
Donโ€™t worry, I wonโ€™t tell anyone. I keep it CMP
by Lalaloopsy37 May 23, 2018
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CMP is an abreviation for check mark pen.
Jessica and Samantha usually use their CMP's during global class.
by ushz.cmp April 14, 2011
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Abbreviation for the Civilian Marksmanship Program. A semi-private company that sells US military surplus rifles, namely M1903 Springfields, M1 Garand semiautomatics, and M1 Carbine semiautomatics to members of approved shooting clubs.
Mike just got his rack-grade Garand from the CMP today. It looks rough but shoots great.
by J. Gerth April 12, 2007
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