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To swear on your friends and family or people you associate with often in gangs mostly used by GDs
Onfonem I'm finna sleep shorty ass .

Keep talking shit Imma beat yo ass onfonem.
by Kiddrevolution October 12, 2015
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May 3 Word of the Day
Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)
Monica: Oh yay! I made a new mutual today because we started following & talking to eachother on twitter and we like eachother (so it seems).
by qtheresurrection March 25, 2015
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3
on fo nem means you ain’t fucking around. if you say this then you’re a dope ass person fr.
on fo nem we slidin erryday
by real gangshta April 13, 2021
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