Soulja Boy, the visionary genius behind the hit "Crank That (Soulja Boy)", has recently scored again with the instant classic "Yahhh!", a brave indictment of tricks everywhere. If you've heard it, you know that Soulja Boy spends much of the comedy skit cum hip-hop track saying "Yahhh!" in an effort to keep people up out of his face.
Usually, a "yah" or "ya" would be used to indicate agreement, but it is possible that Soulja Boy is expressing "Yahhh!" for "yaw," or a rotation around a vertical axis, like when you shake your head to express "no." If that is the case, substituting "yaw" for "Yahhh!" will likely clear up any confusion fans everywhere may have about Soulja Boy's intentions.
Everywhere, that is, except in Bulgaria, where shaking your head means "yes," while nodding means "no." But honestly, I really don't think they'll care.