HMU

What does HMU mean?

HMU is "hit me up," and hitting someone up just means contacting them. Dictionary.com describes it as a request for social interaction or continued contact: text me, call me, let's talk again. It turns up in three main places.

• Making plans: "hmu if you're going to the mall" asks to be included. The sender wants a message when something happens.
• Staying in touch: "good seeing you, hmu next time you're in town" keeps the door open after a meetup.
• Advertising: On a public post, hmu is a call for messages. Dictionary.com quotes a 2011 Tumblr post from a makeup artist offering their services with "HMU." Bake-sale sellers, tutors and resellers still use it the same way.

A related reading, "hook me up," asks for a connection to a person or a thing ("hmu with that recipe"). Dictionary.com lists it as a secondary sense.

Other meanings. In the beauty industry, HMU commonly stands for "hair and makeup," a sense Wiktionary lists separately. A wedding planner's "HMU at 8 a.m." means the bride's hair and makeup appointment.

Examples

• Group chat on a Saturday: "bored at home, hmu if anyone's doing something"
• Instagram caption after a move: "new city who dis, hmu for coffee recs"
• Student to classmate: "I took notes on the lab, hmu if you need them"
• Old friend at the end of a call: "anyway, hmu when you're back for the holidays"
• Neighborhood Facebook post: "selling a bunk bed, good condition, hmu"
• Wedding planning thread: "HMU starts at 7, photos at 10"
• Teen's public bio: "16 | soccer | hmu" (worth a gentle talk, since anyone can read it)

Hmu almost always closes a message and usually comes after the reason someone might want to reach out. The wedding line is the hair-and-makeup sense, and the bio line shows how easily it becomes an open invitation to strangers.

Where did HMU come from?

• Before the abbreviation: Dictionary.com notes that "hit me up" already existed with a broader meaning: to ask or solicit someone for something. In the early 2000s the phrase narrowed to social requests and was shortened online.
• April 2009: Know Your Meme dates the earliest Urban Dictionary entry for HMU to April 19, 2009, defining it as an AIM acronym for "hit me up." Usage grew steadily through 2009 and 2010.
• September 2010: An Urban Dictionary user submitted the joke definition "hold my unicorn," which Know Your Meme says became the top-voted meaning of HMU within five years.
• December 2010: According to Know Your Meme, Facebook named HMU the top trending keyword in status updates for the year, which pushed the unicorn joke further.
• 2011: Dictionary.com recounts a teenager who asked his date to prom with "hmu" on a giant cardboard sign. Because the sign hung over the front of the school, his principal banned him from the prom. The news coverage sent people searching, and Google searches for the term peaked in July 2011.
• March 2018: Dictionary.com published its entry on hmu.

Is HMU rude?

No. It contains no swearing and nothing sexual, and teachers would treat it as ordinary casual writing. It is too informal for a cover letter or an email to a principal, where "feel free to reach out" does the same job.

The one thing for parents to watch is placement rather than meaning. "Hmu" next to a Snapchat username or a phone number in a public profile tells strangers that messages are welcome. For a teen, that is worth tightening up, and our guide to teen text codes covers what those strangers sometimes send next, such as wyll.

How to reply to HMU

• A friend posts "hmu if anyone's free": "free after 4, want to get food?" Answering with a plan is the whole point.
• Your teenager says "hmu when you're outside": "Outside now, gray car by the gym door."
• A coworker ends with "hmu if you have questions": "Thanks, will do. One quick one now: is the deadline Friday or Monday?"

If someone tells you to hmu and you have no interest, you do not have to send anything. Unlike lmk, it rarely expects a reply on the spot.

Is HMU still used in 2026?

Yes. HMU is more than fifteen years old and still routine in texts, captions and bios. It has lost any trendy edge and now reads as plain, slightly casual English, the way "text me" does. Parent guides such as Greenlight's still list it among the basics. The unicorn joke, on the other hand, belongs firmly to the early 2010s. For more shorthand, try the texting abbreviations guide or the wsg and wyd reply guide.