A fork of Rural Dictionary
Means "one of my friends" that she told you not to worry about but fucks them anyway
Beth: *writing message* Andy: BABE WHAT THE FUCK DOES OOMF MEAN Beth: calm down just One of my friends don't worry about him Andy: *goes to her house* Beth: bae whatcha doin here? Andy: Who's that? Beth: OOMF Andy: WHY IS U NAKED HOE
“One of my friends” or, more recently from Twitter,” both “online-only mutual friend/follower” and “one of my (mutual) followers.”
Oomf keeps being annoying today, might need to mute them for awhile