by Claudine Zap Don't get us wrong, we're all for buzz. But there can be too much of a good thing. At the World Cup , the buzzing sound made by the Vuvuzela, the plastic noisemaker, is baffling TV viewers â€" and leading to a symphony of searches. Lookups have ranged from " what is a vuvuzela ," to " what is that buzzing noise at the world cup ?" and " define vuvuzela ." Fans of the sound who want to go the digital route are looking into " vuvuzela horn mp3 ,