Crossword puzzle clue "what you once were"

Baffles (ABOUT THIS PUZZLE: If you saw the headline "Fiend Found!" you might instantly notice that, between the two words, only the vowels change — the consonants stay put. Okay, if you were me, you'

"Wish you were here—__ were there"

What you once were?

Particle physicist whose findings were first accepted by Einstein, but later were shown to be fraudulent

Once, once more and yet once more

You might have one to visit Japan, but you'll need a bunch once you get there

Even if Santa thinks you were naughty ... you've always been on my nice list. Happy Holidays!

Activity that in five years you're going to be embarrassed you were so into today