Cosmetics

[Rodgera]

SWMBO 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, I replied,
"Judging from your skin, twenty; your hair,
eighteen; and your figure, twenty five."

"Oh, you flatterer!" she gushed.

"Hey, wait a minute!" I interrupted.
"I haven't added them up yet."

[A Duke]

If you want to survive I suggest you average them rather than add them.
:D