Is That an Energy Bar in Your Pocket or Are You Just Glad to See Me

My friend Johnny Bravo (not his real name of course- but I swear the living version of the cartoon character) came up to me all excited and loud. "Wooooo!!! I just had one of those energy bars! You know the ones with all the vitamins in them!" he yells as he's bouncing around.
I say, "So they work."
He replies, "Uh, I don't know."