gravity bong (idea)

Instructions:

1. Get two 2-liter bottles, a screen, a sharp knife, a bucket / largish water receptacle, some tape (electrical, duct, or masking is best), and a drilling impliment
2. Take the caps off of the bottles. Drill a decent-sized hole through the tops of the caps, put the tops together with the screen in between, and tape together. the result looks like a female-female connecter with a filter
3. With the knife, cut the bottom off of one of the bottles.
4. Screw the cap contraption into the bottle you just cut, and discard the shit that's lying around. Put away the knives and drilling impliments.
5. Put the material in the cap thing (notice how it's shaped like a bowl? cool, no?)
6. Slowly immerse the bottle in water. Not too fast, or you'll volcano the material
7. Light the material, then slowly draw the bottle up. The chamber of the bottle will fill with really thick smoke if you're doing it properly.
8. Keep the bottom of the bottle in the water; you don't want the smoke to escape.
9. Remove the cap, put your mouth over the top of the bottle, and push the bottle back down into the water. Remember to breathe in :)
10. And try not to fall backwards when you're done...

If you're good with a drill, try to make the hole the same size as the glass tube of your bong. Then you can use that rather than the second cap. Slightly higher class.