... What if some dude in spacesuit, which as we know perfectly protects from deadly space coldness (-270.42 Celsius), will be in space and he will be doused with liquid nitrogen?
Then depending on how his suits reacts with that.
Vacuum of space is in general... Empty. Emptiness can't transfer heat that easly, because temperature is just summed up kinetic energy of matter particles in a body (be it gas, or solid object for example). Those particles by bumping with eachother (in gas and liquids, particles in solid matter vibrate) lose said energy, some in form of infrared radiation that just shoots up in every direction and this would be basically the only reason of "freezing". However it would be a very slow process.
To answer the question:
a) If your body isn't insulated from the suit, you would freeze.
b) If your body is insulated from the suit, only suit would freeze. Hypotetical advanced space suit wouldn't be affected by it.
What happens when you are exposed to the vacuum of space "naked"? Any water on the surface of your body would nearly immediately boil, gas in your lungs and digestive track would rapidly expand. That in first seconds. Loss of vision next, then loss of consciousness (either from gas exchange working in reverse, or pain from boiling eyes, or both), then death. Humans in theory should be able to survive 90 seconds in space (just survive, permanently disabled).
