ofn 

On Fo'Nem: Meaning that whatever you say you put on your Folks and them.

internet thug: ofn i'm finna beat yo ass nigga
-----
friend: yo i hear Laysiana finna be at the party tonight
me: boyy ofn ima fucc da bitch

ofn by DatNiggaWithDaBigDick May 31, 2017

ofn 

It means "on foe and nem"

or swear on my enemies, foes and nems

"ofn my bro slide in Draya's dms!" " oh word? she quote him a price?"

ofn by IamMerp August 24, 2016

OFN 

OH FUCK NO

OFN!

OFN by KoreanLegacy May 6, 2011

OFN 

Old Fucking News.

All your base? OFN!

OFN by Jewsus January 20, 2003

ofn 

ofn is short for oh fuck no

jimmy says to beth "let's have hard anal sex" and beth says back to jimmy "oh fuck no aka ofn"

ofn by slimjimjohn May 25, 2020

Ofn 

it mean "oh fuck no"

Brother: ketchup goes with mac and cheese

Me: Ofn

Ofn by MalykiJ44 January 8, 2020

ofn 

OFN means, "Old Fucking News" meaning, GET WITH THE FUCKING TIMES!

"Hhahaha, did you see t his totally l33t flash?"

"OFN Loser by like a year."

ofn by Kuriin August 17, 2004