Well, I have a new favorite glitch :D
Lol what? Thats so weird!
Im instaling the mobile just to see what happens.
Doing this on mobile makes really weird things happen
I thout nan stood for [not avalibel now]
This is actually a glitch that can be used to make anything invunerable, if you put Deut it expands, meaning it is hot, yet no metal will glow, nor will the water evaporate, as for lava as Kevino36 said it turns bright red, it maybe the lowest point it can cool before it turns to stone, so this -nan could inhibit matter changes, like a solid to liquid, or liquid to gas, and so on and so forth.
!set tmp rfrg 2139095041 will create positive NaN (Not A Number) temperature