The Stolen Credit Card
While paying bills, John's wife comes home one day, furious, and exclaims, "somebody stole my credit card!" John consoled his wife and went back to work, not missing a beat.
His wife gets even more furious, wanting to know what he is going to do about it. John looks up from his computer and calmly replies, "Nothing." His wife responds, "Why!?!"
"Because he's spending less than you do!"