
First I thought it was our speakers or the cable but then I realized it is neither & had to look it up. I understand it is a blowing instrument called "vuvuzelas".
Can they not ban it from stadiums? What makes it fun when it is so annoying to us even thousands of miles away?! Imagine how it will be for those in the stadium with these vuvuzelas enthusiasts!
Wikipedia has a detailed article on it. Check it out here if interested: http://en.wikipedia.org/wiki/Vuvuzela