Glass dildos trace their roots to the 1600s, when hand-blown hollow glass dildos—often filled with warm water for extra tease—were secretly used by Italian nuns for steamy self-pleasure, as noted in period texts mocking religious morals.
Lensless glasses are a real trend — These purely fashion glasses have no lenses at all and are worn as style accessories in some parts of Asia and by fashion brands, with benefits like no fogging or reflection.
The brain of adult men is approximately 10% larger than that of women. Because men are typically taller and have more muscle mass than women, their brains require more neurons to control the body.