"How old are you?" "That is a difficult question. The latest…

"How old are you?"
"That is a difficult question. The latest personal survey available shows my psychological age to be 12, my moral age 4, my anatomical age 7, and my physiological age 6. I suppose, however, that you refer to my chronological age, which is 8. That is so old-fashioned that I seldom think of it any more."