The World Cup 2010 is over, and we thought that the sound of the vuvuzela might soon be over, too.
Not so fast.
YouTube user Hunter C. created this DIY electronic vuvuzela, MacGyvering it from a 555 chip and some potentiometers. Great for if you want to 'terrorize McDonald's" when you play it through your friends' massive car stereo.
Now - where are those noise-reduction headphones?