Strange But True Sex Facts Largest erect penis: 13" Smallest erect: 1.75" The Caramoja tribe of northern Uganda tie a weight the end of their penises to enlongate them sometimes to such a degree that the men literally have to knot them up. In 1609 a doctor named Wecker found a corpse in Bologna with 2 penises. Since then, there have been 80 documented cases of men with the same. During foreplay, a woman's breast can increase in size up to 25%. The maximum depth at which vaginal stimulation occurs is only 2". In the 1950s, it was found out that 75% of men cum within 2 minutes of penetration, with the orgasm lasting no longer than a few seconds. The longest documented for a women is one minute. Among the Mangaians of Polynesia, 18 year old couples make love an average of 3 times a night, every night, until they're in their 30s, when the weekly average drops to a mere 14. (I wanna move!) The maximum speed at which the erotic sensations travel from the skin to the brain has been clocked 156 MPH. Women are 30% more sexually active during a full moon, and the most common love making time in the US is 11:00pm. Intercourse peaks in July. Except for the 1/2 dozen men who've shown up in emergency rooms over the years because they got too intimate with a vacuum cleaner, women are the more creative auto-eroticists, and they masturbate most frequently when in a stable relationship. Women are also better self-starters. 60% claiming to have discovered orgasm on their own, as opposed to only 25% of men.