Can a demon possess a spirit guide?

I am trying to get my spirit guide possessed by a demon. I want to see what it does. And what happens. Then I want to exorcise the demon from the spirit guide and then will the spirit guide try and kill me if I try to do this? And if my spirit guide left me then what would they say to me if I summoned it on the Ouija board what would it do? Would it try and kill me? If I get it possessed should I leave it possessed because it might leave me or try to kill me if I exorcise the demon out. And anyway how do I make a demon possess it?