Vuvuzela

The ancestor of the vuvuzela is said to be the kudu horn - ixilongoin isiXhosa, mhalamhala in Tshivenda - blown to summon African villagers to meetings. Later versions were made of tin.
The trumpet became so popular at football matches in the late 1990s that a company, Masincedane Sport (curses be upon them), was formed in 2001 to mass-produce it. Made of plastic, they come in a variety of colours - black or white for fans of Orlando Pirates, yellow for Kaizer Chiefs, and so on - with little drawings on the side warning against blowing in the ear!
There's uncertainty on the origin of the word "vuvuzela". Some say it comes from the isiZulu for - wait for it - "making noise". Others say it's from township slang related to the word "shower", because it "showers people with music" - or, more prosaically, looks a little like a shower head.
The announcement, on 15 May 2004, that South Africa would host the 2010 Fifa World Cup gave the vuvuzela a huge boost, to say the least - some 20 000 were sold on the day by enterprising street vendors.
It's a noisy thing, so there's no surprise some don't like it. Journalist Jon Qwelane once quipped that he had taken to watching football matches at home - with the volume turned low - because of what he described as "an instrument of hell". (source: http://www.southafrica.info/2010/vuvuzela.htm)