[Readings] Mark Twain on the safest sex Adjust Share By Mark Twain, This article is only available as a PDF to subscribers. Download PDF Tags Masturbation More from Mark Twain Humor Repetition is a mighty power in the domain of humor. I undertook to prove the truth of this forty years ago in San Francisco on the occasion of my second… The burglary at Stormfield Sitting in darkness Adjust Share