Justin Bieber and HMU aka (hit me up) are top trends on Facebook status updates. Facebook released its “2010 Memology” today, looking at the top 10 status trends of its 500 million users.

HMU (hit me up) becomes top Facebook status updates because it’s popular with students telling their friends to hit them up during summer break. Other popular status updates included references to the World Cup, the iPad, iPhone 4, Airplanes, and of course, our sexy boy Justin Bieber.

Here’s the complete list:

1. HMU (hit me up)
2. World Cup
3. Movies
4. iPad and iPhone 4
5. Haiti
6. Justin Bieber
7. Games on Facebook
8. Mineros/Miners
9. Airplanes
10. 2011

If you notice, Justin Bieber is #6 and the only human on the list.
And that makes him #1 person on Facebook