C.S. Lewis on sex: Showing Sin as Ridiculous

C.S. Lewis has a great little piece on sex. He is comparing the biological need for sex and for food. After comparing how one may eat enough for two, but not for ten, he points out how if sex is considered only for pleasure it becomes preposterous and in "excess of its function." He then says this:

"You can get a large audience together for a striptease act--that is, to watch a girl undress on the stage. Now suppose you came to a country where you could fill a theatre by simply bringing a covered plate on to the stage and then slowly lifting the cover so as to let everyone see, just before the lights went out, that it contained a mutton chop or a bit of bacon, would you not think that in that country something bad had gone wrong with the appetite for food? And would not anyone who had grown up in a different world think there was something equally queer about the state of the sex instinct among us?"

Here Lewis reminds me of a political cartoonist drawing a picture in such a way that by his exaggerations and caricatures he shows me what is true, rather than the false picture that my senses in all their proper proportions, and my intellect and its reasonableness present me with.