In my honest opinion, the most annoying phase. It is used by the main character of the anime/manga Naruto, Naruto Uzumaki. The phase is more often used in the first arc of the original Naruto anime, but scares off people who haven't watched the anime. It is only used in the English dubs. Narutards use the phase at the end of sentences, like the hero of the anime, Naruto.
...Meanwhile, in an anime forum...
*Person 1 is posting on a Death Note area*
Person 1: I'm gonna be Kazekage! Believe it!
Person 2: STFU. Go back to your Naruto area.
Person 1 got warned once by Person 2. Reason: For being off-topic in the Death Note area. Please, if you want to join the Narutards, go to the Naruto area. There's role plays waiting to be joined.
The ultimate and highest confirmation of truth. Coined by Naruto, who says it at the end of every other sentence.
The admins over at my boards just sporked their own mods for no reason, believe it!