You'd have to waste a bong, but why not use a home-made one? You could always use a glass stem/bowl and just put the stem through a high-lighter so that it won't even touch the liquid metal.

I don't know if I'd ever wanna try this though. Its one of those things that SEEMS cool, but is really just pointless. Just the thing you'd do so you could be able to say "dude once I smoked a bong with liquid metal in it!" even though it could have totally sucked ass.
Frivolous248 Reviewed by Frivolous248 on . bong idea Ive heard of this liquid metal alloy that doesnt have anything toxic in it and wondering, what would happen if you filled your bong with that? Itd be fucking cool, the metal costs like $20 a gram though... Rating: 5