All these years later, we still have a soft spot for Gak. And we still have no idea what's in it. But this much is clear: Whatever the ingredients that make us this weird wonder material, they manage to make it heat-proof, as demonstrated in this video.

These wonderful home scientists took a blazing hot ball of nickel and stuck it inside the Gak. Nickelodeon's ubiquitous slime product sizzles a little bit, but it never quite ignites. At the end, with the scorching nickel removed the Gak is no worse for wear (though it does make an amusing fart noise at first).

Some supposed recipes call for glue and boric acid to make gak, but who knows if that's what is really in there. Whatever it is, you can't kill it with fire. So if Gak ever comes alive, just go at it with a mallet instead.

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Source: Gizmodo

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