“When forming images, it helps to have a dirty mind. Evolution has programmed our brains to find two things particularly interesting, and therefore memorable: jokes and sex — and especially, it seems, jokes about sex.”
Joshua Foer, author of “Moonwalking With Einstein: The Art and Science of Remembering Everything,” as quoted by Maureen Dowd.
Perhaps evangelicals are repressed about sex because they don’t believe in evolution. Or vice versa.