Luke's wife bought a new line of expensive cosmetics guaranteed to make her look years younger. After a lengthy sitting before the mirror applying the "miracle" products she asked, "Darling, honestly what age would you say I am?"
Looking over her carefully, Luke replied, "Judging from your skin, twenty; your hair, eighteen; and your figure, twenty-five."
"Oh, you flatterer!" she gushed.
"Hey, wait a minute!" Luke interrupted. "I haven't added them up yet."