nope not bad at all, infact alot of home-made gravity bongs use that very idea. just make sure no plastic is burned because it can be very dangerous. Enjoy, btw Try making a gravity bong. Get you ripped right.

:thumbsup: How to make a Bong, gravity bong, Water Pipe, Waterfall Bong - Concept420 - Marijuana Entertainment and Information

Enjoy my friend and welcome
Masta Stuff Reviewed by Masta Stuff on . smoking with water bottles Is it bad? I don't burn the plastic I take a bowl and cut a hole in the bottle and then inhale through the water bottle. But I only light the bowl I don't light the plastic. Is this bad? Rating: 5