15 Second Paper Screamer

This is my first instructable, so I thought I'd do something simple. Sorry for the lack of any actual photographs; my camera lost its will to live and dove off the table... I hope my crude 'Paint' drawings will suffice.

This may be common knowledge. Feel free to let me know if my instructable is completely worthless. Here we go...

You'll need a small rectangle of paper. Size and precision are not important here (you don't even need scissors, just tear it out). 2 inches by 4 inches works well.

Fold the paper in half width-wise, then fold the ends to the center crease. You should end up with something like this:

Tear a couple of notches in the center crease. Size and number of notches are not crucial...

Place the center crease between your index and middle fingers so that the center section extends outward. Press against your mouth as shown. Blow! You'll have to experiment a little with the gap between your fingers, but when you get it right, it'll scream! These are VERY loud.