This is Internet for: You what, mate? This is universally used by internet speakers, regardless of weather or not they live in a society where the term "mate" is commonly used.
Guy 1: I fucked your mom last night.
Guy 2: u w0t m8
Americans from the USA, particularly of the type commonly encountered in the Red States, as opposed to people from the Iraq, the South Africa, and everywhere like such as.
Popularized by Miss Teen South Carolina, Lauren Caitlin Upton.
Host: "Recent polls have shown that a fifth of Americans can't locate the U.S. on a world map. Why do you think this is?"
Ms. S.C.: "I personally believe that U. S. Americans are unable to do so because some people out there in our nation don't have maps, like such as in South Africa and The Iraq and everywhere such as, and ...."
Used to point out when one has failed or is making choices that someone inexperienced with the activity would make.
John: Dude! I just accidentally deleted my entire college résumé!
Kevin: LOLOLOL. U R THE NOOB.
A 7-year-old's comeback.
*kills 7 years old in minecraft 1v1*
7-year-old: HACKS, FUCK U NOOB
Synonymous with "Are you serious?" or "Are you for real?"
Originated from the legendary chill v combat-ex match, commentated by the bear semenated day9.
Girl: I'm pregnant
Guy: r u for rela?
Girl: mhmm
Guy: kk let's talk about this at the top of a flight of stairs