They are everywhere at the World Cup games in Sout...  ...Cup games in South Africa: vuvuzelas! The plastic horns sound like a swarm of hornets when thousands of people play them at once. The s...  ...sands of vuvuzelas have been sold this year. The horns , FIFA officials said...

(YouTube Link) At a discussion forum called t...  ...YouTube Link) At a discussion forum called the Horn and Whistle Board, user captofchaos revealed this...  ...hine that he has constructed. The Great American Horn Machine has a 620 gallon air tank and an air comp...  ...ir compressor that powers numerou...