Not only is the sound annoying, it's dangerous!
Insurance saleswoman Yvonne Mayer, 29, was unable to speak or eat for two days after ripping her windpipe when she blew the three foot horn during a street party in Cape Town.Finally - a good use for the vuvuzela! Drown out Obama speeches
Her injury came as it was revealed a German fan had been diagnosed with severe tinnitus after watching his team's 4-0 over Australia.
'It was so loud that I passed out. When I came round I couldn't hear properly in one ear - it was just a permanent ringing.'