This is the party trick that ends the party. The alarm clock for your siblings that earns you a wedgie. This is THE MOST ANNOYING SOUND IN THE WORLD. It truly is. And it's annoying to difficulty ratio is wonderful. Oh yeah, and it's all because of science.
If you're feeling too un-annoyed today, start with the video to listen in. Then imagine that at about ten times the volume right next to you. And then get a can and do it yourself! You'll be the life of the one-person party you've suddenly created. :)
For nerding out about science, head to the last step.
Any aluminum can will do! It's the thinness of the aluminum can due to it's strength that will make all the magic. I've found that your standard-shaped 12 oz. can works great. Also, tall ones with the same diameter create an amazing Chewbacca-like noise.
If for whatever reason, you want to nerd out about the ubiquitous nature of aluminum cans throughout the world, this article is a great place to start.