what happens to your body when explosed to the vacuum of space? would a person die instantly?

It certainly wouldn't be instant

In fact you would welcome unconsciousness because it wouldn't be nice

Suffication, Radiation, Frostbite, Blood and Bodily Fluids Boiling including the air in your lungs

I can think of better ways to go

It sorta happened... Here's a test of a spacesuit in a vacuum chamber, and it depressurized... (but, the guy lived):

https://youtu.be/PHNtsOvQryU

No, it would take a few minutes. What would happen is that the air would leave your lungs (assuming you weren't holding your breath - if you were, your lungs would rupture and your body would swell due to the pressure of your internal fluids not being counteracted by air pressure from the outside. Bubbles would form in your bloodstream and you would also gradually freeze and roast on opposite sides of your body.

probably auffocate

No. Technician Jim LeBlanc was exposed to near-vacuum conditions in Houston in 1965, and remained conscious 10 or 15 seconds. The chamber was repressurized, and he regained consciousness when the pressure reached 8 psi; he eventually escaped unharmed. Tests on dogs have shown that they survive vacuum conditions for around 90 seconds but die if they are exposed to vacuum for 2 minutes.

Rapidly could cause your lungs to burst, the gasses in your blood would expand, like the bends.

First would be unconsciousness followed soon by fatality. Asphyxiation would be certain.

Technically, all body fluids would begin to boil. Human life expectancy would be less than a minute.

Mainly, the air in your lungs would be sucked out and there would be nothing to replace it, so you would asphyxiate. You would not instantly freeze or feel cold because although space is technically cold, vacuums don't conduct heat very well, in fact they are famously good insulators. I think any surface liquid would evaporate, so your eyes would go very dry for instance. I can never work out if your whole body would be "sucked" outward or not, I think it would.

You would very quickly suffocate.

If you were breathing air rather than pure oxygen, you would experience severe "bends", decompression effects due to nitrogen dissolved in you blood bubbling out.

Any gas in your body / guts would expand almost explosively.

The water in your lungs, skin and eyes etc. would evaporate very quickly, chilling those parts and possibly causing frostbite or freezing them within a few minutes.

And no doubt other effects..

It would probably take a couple of minutes to die, but in the meantime the effects and damage to your body would be accumulating and definitely not nice..