^ That's the silly thing about it to me. The magic word he says that transforms him is Shazam so he goes by... Shazam?
"Wow thank you so much, what's your name?"
"Shazam" *lightning bolt falls from sky, turns him back into kid/teen*
"Sooo... you're a kid?!"
"Who's your favorite superhero? Mine's Batman."
"Oh I like a lot of them... Superman's cool."
"Oh who's the big red one? What's his name, Shazoom?"
"You mean Shazam?" *bolt of lightning*