Bought and Sole'd

I met a man walking down the street the other day with a pair of flip-flops on, even though it was a bitterly cold day. I looked down at his toes exposed to the elements, and my curiousity got the better of me.

"Excuse me," I said. "I can't help but notice that you've got just a pair of flip-flops, even though it's freezing today... Are you OK? Can I give you some money towards some shoes?"

"Oh no," he replies, "I'm fine, honestly... It's just that I'm a Christian."

"Er, OK." I said. "So that's why you're wearing flip-flops?"

"Of course... I'm a Christian, and I'm single... So..."

"Er..." I said. "I seem to have lost you there..."

"Well," he replied, "It's just what I believe in... No socks before marriage."