Oops...sorry. I mean...
If all exists right now, then you are correct about stating 'You are THAT you are...'
Or I am what I am...or am I what I am?...or maybe even what am I?
I'll need a swim in the river later and be a duck for a while and ponder what I am so I am quite sure when I step out of the river...no use taking a shower later if the water's just going to roll right off me.