11 facts you didn't know about the pen*s (18+)

1. Every p*nis was a clitoris. Every p*nis in the womb starts as a clitoris before hormones ‘s*x’ the brain of the to-be male. The man-hood retains the mark of its female heritage: its dark underskin and the thin ridge or seam, known as the raphe, which runs from scrotum to anus, are remnants of the fusion of the vaginal lips.

2. Penises used to have spines. Though they were lost before Neanderthals and modern humans diverged. Scientists are still not quite certain of their purpose, but they speculate that it apparently quickened the pace of an erection and is more common in promiscuous species (such as cats).

3. Fetuses can have erections! Male fetuses can have erection during the third trimester, according to ultrasound scans.

4. No brain is necessary for ejaculation: the order to release comes from the spinal cord, not the brain.

5. King of ancient tribes ate p*nises: In ancient tribes, the king would often eat the p*nis of his predecessor to apparently absorb his holy power. This practice was allegedly banned by the ancient Hebrews.

6. P*nises can actually break: Every year, hundreds of men break their erect p*nis, researchers say. Most do so during “violent intercourse.” But there are also cases where men snap their member – indeed, specialists note that such incidents are accompanied by an audible crack – by falling out of bed with an erection. The cure for a broken man-hood? Six weeks of bed rest with a man-hood splint.

7. Smoking can shorten your man-hood by as much as a centimeter. Erections are all about good bloodflow, and lighting up calcifies blood vessels, stifling erectile circulation.

8. The foreskin has an abundance of Langerhans cells, which are immune cells that are infiltrated by HIV. This may explain why circumcised men in Africa have a 60% lower rate of HIV infection from heterosexual intercourse.

9. A healthy male averages 11 erections per day-nine of them while asleep. After ejaculating, it can take him anywhere from two minutes to two weeks to achieve another erection.

10. From shower to grower: On average, a limp man-hood will increase in volume 300% when it is erect. It will also contain more than eight to ten times its normal amount of blood.

11. Jonah Falcon, a 42-years-old man with a 9-inch man-hood (22.86 cm; 13.5 inches, or over 34 cm when hard). He’s the man with the world’s largest p*nis.