I've used hot water (not anywhere near boiling) and it feels nice. I wouldn't suggest boiling, you might damage the glass, and you might get steam burns from the water vapor if it's hot enough.
Purple Banana Reviewed by Purple Banana on . Does it hurt? Hey guys, just a quick question....a friend of mine suggested using ice and boiling water in my bong as it will make it smooth as well ice I guess lol. I've also heard that putting ice in will really hurt your lungs so what's the truth here? :hippy: Rating: 5