Puzzling

Scrutinies can't figure this out and really wants to know the answer. Y'all are good at these classically styled puzzles right? If you know the answer, help her out.

While you look for me and use your head to find my whereabouts, I am something. But as soon as you find me, I am nothing. Who am I?

Speaking of brain teasers, check out GOP Soccer Mom's puzzler.

Tags: Catholicism, Christianity