Penis enlargement, or male enhancement, is any technique aimed to increase the size of a human penis. Some methods aim to increase total length, others the shaft's girth, and yet others the glans size. Techniques include surgery, supplements, ointments, patches, and physical methods like pumping, jelqing, and traction.

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A tobacco smoke enema, an insufflation of tobacco smoke into the rectum, i.e. as an enema, was employed by the indigenous peoples of North America to stimulate respiration, injecting the smoke with a rectal tube.

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Snake oil is a euphemism for deceptive marketing. It refers to the petroleum-based mineral oil or "snake oil" that used to be sold as a cure-all elixir for many kinds of physiological problems.

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This mass treatment—a cure for the now-defunct medical condition of “hysteria”—was made possible by a new technology: the vibrator. Vibrators allowed physicians to massage women's clitorises quickly and efficiently, without exhausting their hands and wrists.

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