Caligula would have blushed, but Cleopatra would have whipped out her honey-bee vibrator. Masturbation has been looked down upon, revered, prescribed by doctors, and, most importantly, used since the dawn of time. Our ancestors had ways of masturbating that were actually very similar to ours, if not even more ingenious. Dildos have been around since the Upper Paleolithic era, vibrators were allegedly first created by Cleopatra, and men have been trying to keep an erection with different techniques for a very long time. Celebrate International Masturbation Month by finding out how masturbation has evolved over time.