History is riddled with urban myths about masturbation. Once upon a time, people truly believed that masturbation led to blindness or caused hair to grow on someone’s palms. While those myths seem pretty ridiculous, there are others that sound so possible they’re easy to confuse for the truth. Some myths claim that using vibrators for too long can damage your genitals, that using sex toys too much can make you unable to orgasm from sex with real people, and that you can get addicted to masturbation. But, mo