What's plastic, a metre long, brightly coloured and sounds like an elephant?
It's the vuvuzela, the noise-making trumpet of South African football fans, and it's come to symbolise the sport in the country.
Here is a limerick to celebrate this instrument and World Cup 2010.
Hey you frantic, fanatic fella
With pursed lips on the vuvuzella
Your song adds to the throng
Grows and reverberates so strong
Like a billion bees buzzing a capella.