I hope its the new "What" chant as well. We've already seen a more practical use for it, with people using it for blows. Using it in an actual match to cheer or boo, instead of using it to ruin a promo. Like in Punk's match against Henry. Then they do "No" to go along with it when you don't like what the heel does. So simple, but its the simple things that are catchy and go over (like Flair's "Woooo").