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Chicago term used to confirm the seriousness or accuracy of what was just said, like "on my mama.' 'Foe nem' are your male friends/associates
Sean: "I have to past this test or I'm going to fail! On foe nem!"
Mom: "Yeah, you better pass. On foe nem!"
by SouthChicagoLingo April 18, 2015
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when a bitch got chu fucked up and you gotta say "On Foe Nem hoe stop playin with me!!"
On foe nem ghee they ass aint on shit!
by shawtyyslayy June 01, 2018
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