This question studdenly appeared in my mind, A hypothetical liquid that is completely incapable of transferring (consequentially holding too, right?) Any heat in any way, how would it feel to touch it? We feel cold when heat gets out of our body and hot when it gets in right? Would it just feel perfectly neutral?
Okay, this is my undocumented, your average Joe type of guess, but here goes: as there is no heat exchange with its environment, I assume your hand would burn from its own heat.
If it was just your hand, your circulation would keep moving that excess heat out and into the rest of you, which would radiate most of it out like normal.
It’s a different story if you’re submerged far enough that there is not enough of you still exposed to discharge that heat.
Burn, probably not. After all we can dip our hands in hot water for hours and feel fine. Bloodflow would take away a large part of this heat.
If you were to dip yourself in such a liquid, you would probably risk hyperthermia really quick though.