When building an ICBM out of matchstick-heads and PVC, you've got to be sure to use Ohio Blue-Tip brand matches, as they yield much more propulsive power than your ordinary brands.

Also, when you're scraping the tips off into a bowl, be sure to empty the bowl very often. Otherwise, you'll have a nice big pile and, of course, you'll create just a little too much friction and...
FOOM!

...say goodbye to your eyebrows and any other assorted facial hair...