This is an appropriate time to share a story about a co-worker. We went to Kroger for lunch (grocery store, like Publix, sells pre-packaged sandwiches). Every time we went, he would do $5-10 in cashback. I asked why. He said so he has spending money that his wife doesn't know about. Minor, but always struck me as an epitome of deception and lengths people will go to in order to avoid honesty in their marriage.
