OOMF is an acronym for “one of my followers” or “one of my friends.” People use it on social media platforms like X (formerly known as Twitter) to mention someone without naming or tagging them.

So what does OOMF mean in a specific post? Context is everything. Read the room—or rather, the rest of the post—to know exactly who the creator is talking about.

OOMF lets you talk about someone without tagging their X handle. That keeps the mention discreet.

The tone shifts with the post. OOMF can be a positive, neutral or negative shout-out—often bordering on a subtweet.

OOMF belongs to a growing list of social media acronyms that make posts faster to write.

What does OOMF mean on X?

On X, OOMF keeps its original meaning: one of my followers or one of my friends. The term started on Twitter as a way to point to a follower without naming them, existing as a hashtag since March 2010 before catching on in 2011.

The term quickly spread to Tumblr and Instagram, so its meaning remains exactly the same across platforms.

Close followers often know who the OOMF is, the same way insiders know a creator’s lore. Here are two example posts, one affectionate and one neutral:

  • “Shout-out to my oomf who hypes up every single post. You’re the best.”
  • “Oomf just recommended a new podcast, and I’m three episodes in.”

OOMF vs. moots

“Moots” is short for mutual followers, referring to people who follow and generally actively engage with each other on social media.

That two-way follow is the key difference. An OOMF can be any follower or friend, and the follow doesn’t have to go both ways.

Every moot (or mutual) counts as an OOMF, but plenty of OOMFs are strictly one-way follows.

Should brands use OOMF?

OOMF is personal, peer-to-peer slang, so it fits casual brands that spotlight community members or reshare user-generated content. Use it only when it matches your brand voice. For the bigger strategy, read our guide on when brands should use slang.

Spot every OOMF shout-out in your replies with Sprout Social’s intuitive engagement tools. Start a free trial today.