Can I claim me, myself and I as the holy Trinity? ?

Sure- I just hope you don't go smiting people every time something doesn't go your way like the Christian one does.

Of course you can. I would advise you set up a bunch of circular reasoning explanations in advance to stonewall people who ask for proof of your claims. Like makeup prophecies that about how us non-believers would say you were full of it so that when we do say you are, you can convince your believers it was foretold!

Actually, I am God. Stop trying to imitate me before I strike you down. Did you hear that thunder outside your window?

hahaha that was funny! but no

Um...that would be blasphemy.

No dear, for you are flesh.