"No, this is the first time I've seen it." You discovered this together, Kitty. He looks over it, humming. "Maybe... I think I've got a lighter on me. Maybe it'll melt?"

It takes him a minute to fish it out (why does he have one? because they're useful), but he flips it open and holds it next to the ice. It does actually melt, but the second he pulls the lighter away it freezes over again. "....Well that's kind of creepy."