I stumbled upon this idea while reading this article – Dr. Kush. And couldn’t believe I’d never tried it. It’s great.
The idea is simple. Use the water filtration of the bong as one last purification step before your lungs. If you remove the slide piece/bowl from most bongs or waterpipes you can press the mouth piece of the solid valve against it and just pull right through. Maybe it’s my imagination but I feel like it eliminates some of the dried out sinus effect of frequent vaporizer use.
It’s also a great way to re-acquaint yourself with your poor old bong, which has been neglected since your vaporizer arrived.