Chapter 1

Everyday, there are about 100 million acts of sexual intercourse a day globally.

The largest penis was recorded by Dr Robert L Dickinson in the early 20th century at 13.5in long and 6.25in circumference. It belonged to 41 year old New Yorker Jonah Falcon, and measured 9.5 inches flaccid.

Despite what men claim, only 15 percent have a penis longer than seven inches. Only 3 percent have a penis more than eight inches long.

79% of men’s penises are “growers” while 21% have “show-ers”.

The average vagina is three to four inches long but can expand by 200 percent when sexually aroused.

The world’s longest clitoris, featured in W Francis Benedict’s The Sexual Anatomy of Women, comes in at 12 inches.

According to Kinsey, one man had three orgasms a day for 30 years, while another had about 33 a week for 30 years.

In a male, the impulse to ejaculate comes from the spinal cord and not the brain. Men who have had their spinal cord severed can still achieve orgasm through stimulation.

Men can achieve ejaculation up to 48 hours after death, and produce viable sperm.

A study found that women directly exposed to semen vaginally (in other words, through sex without a condom) were less depressed. Researchers think the mood-altering hormones in semen were absorbed into the body through the vagina.

In their research, sex experts Masters and Johnson witnessed more than 10,000 male and female orgasms.

The average male orgasm lasts 6 seconds. The average female orgasm lasts 20 seconds.

The male pig as well as the elephant has a penis that is prehensile, and can be moved at will as a human would a finger.

85% of women are satisfied with their partner’s penis size. Only 55% of men are satisfied with their own penis size.

The whale has the biggest vagina in the animal kingdom, at approximately 6 to 8ft long.

The rorqual whale has the largest penis up to 10ft long and 1ft wide.

The average woman burns off between 70 and 120 calories per hour during sex, compared to 77 and 155 for the average man.

A teaspoon of semen contains 5 calories.

Semen contains citric acid, amino acids, fructose, enzymes, phosphorychloine, prostaglandin, potassium and zinc.

The typical man will produced about 14 gallons or 1/2 trillion sperm in his lifetime.

The average speed of sperm during ejaculation is 28 mph.

Women were more likely to have sex dreams about politicians, celebrities, or their exes while men were more likely to dream about having sex with multiple partners at once.

The states where couples have the longest lovemaking sessions are New Mexico (7:01), West Virginia (5:38), Idaho (5:11), South Carolina (4:48), and Missouri (4:22).

The states where couples have the shortest lovemaking sessions are Alaska (1:21), South Dakota (1:30), Montana (2:03) and Georgia (2:45).

According to one survey, 51% of respondents said they could go longer without sex than they could go without coffee.

The average male loses his virginity at age 16.9; females average slightly older, at 17.4.

Experiencing butterflies associated with falling in love means something totally different in France. “Papillion d’amour” refers to pubic lice.

Lisa Sparxx, a porn star, had intercourse with 919 men in 24 hours, setting a new world record in 2004.

There is a medical condition known as clitoral atrophy, which occurs when the clitoris doesn’t receive enough blood flow, causing it to retract into the body, One of the most common causes is when the woman goes for a very prolonged period of time without sexual arrousal.

According to more recent research, it is the egg that selects which sperm it will allow inside to become fertilized. Scientists do not know how this selection is made, but it has been observed that a later arriving sperm cell will often be given almost immediate entry, even as hundreds of others try to force their way inside.