Quote Originally Posted by Archie
Yeah because it would have been so badass if he just did it spontaneously
It would have been cooler, though out of character, if it went something like:

Kiba: "blah blah Genin blah blah"
Naruto dashes in front
Naruto: "You're too noisy."
Naruto farts

Naruto K.O.s Kiba&Akamaru