An onj is a girl who is always making dark jokes, loves country tv shows and is at least 50-78. You are a girl who did the tiktok challenge where you remove the first and last letter of your name. Congrats, now stop wasting your time.

Boy: Great, its my onj.

onj by candle in the stupid lantern May 24, 2021

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ONJ

ONJ is a concept. She’s smelly.

-Who is ONJ?
-I think you mean WHAT is ONJ.

ONJ by massivewanker101 July 21, 2019

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OnJ

Columbus slang word for someone dead niggas

OnJ you tweaking
Quit playing with me OnJ

OnJ by 614streetnews November 21, 2023

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