Quote Originally Posted by NightProwler
just don't try hammering a nail into it like i did.
LOL. Nice.

By the way, you can drill glass. Get some Play-doh, make a small snake with it about 200% bigger than your hole will be. Put a dot on the bong with a marker where the center will be. Put the Play-doh snake in a circle with the dot in the center. Make sure the Play-doh is solid all the way around. It should be less than 1" high. Fill the circle with a bit of water. Choose your drill-bit. Drill at the center dot.

The water keeps the glass from getting too hot and cracking. I don't know what type of bit you would need but I'm sure someone at your hardware store could tell you.