These are the 10 best NSFW facts

You probably learnt a huge number of uninteresting and fairly useless facts at school. Who really needs the three formulae: sin, cos and tan?

Truly, the interesting and amusing facts in your brain now were learned outside of lessons; joking with friends, stumbling around the internet and down the pub.

So the next time you're out for a drink or shooting the breeze, here are some NSFW facts you probably haven't heard before, courtesy of the good folks at reddit.

Seriously, these aren't suitable for minors - it's almost entirely about animal's sex organs.

1. Octopus facts

An octopus will literally rip its own penis off and throw it at a female and the female f**** herself with said penis.

-Brachiozord

2. Kangaroo facts

Kangaroo testicles are above the penis and “highly mobile.”

Kangaroos have three vaginas. The outside two are for sperm and lead to two uteruses. The middle one is for giving birth.

The urinary tract goes through the middle of the three vaginas, which may be why joeys are so small (40,000 times smaller than adult kangaroos) — there’s no room for a bigger birth canal with the urinary tract in the way.

To go with the two sperm-vaginas, male kangaroos often have two-pronged penises.

Because they have two uteruses plus a pouch, female kangaroos can be perpetually pregnant.

-plazman30

3. Boar facts

Wild boars have the largest amount of ejaculate of all mammals. About 200 mL on average. Humans average 5-10 mL

-blitzwit143

4. Human and dolphin facts

Humans and dolphins are the only two creatures known to man that, if given a mirror, will eventually admire their own genitalia.

-Bweb98

5. Elephant facts

Elephants have prehensile d**ks. That means they can use it to grab stuff.

-neonflannel

6. Very disturbing flatworm facts

Flatworms are hermaphroditic, so when they come together to mate they engage in d**k jousting to determine which organism gets to impregnate the other. Their penises (yes, plural) are sharp and are used to stab each other. They ejaculate into the wounds until one of them gets lucky and stabs near enough to the female reproductive organs to inseminate the other. The winner stays male while the loser converts into a female.

- Tormented_Anus

7. Earwig facts

Japanese researchers found that if they ripped off the penis of an earwig a spare penis will pop up in the same place

-CharlieGB

8. Spider facts

Brazilian banana spider bite gives you a painful erection that lasts for hours before you die if untreated. If you get treated in time they take a big ass needle and suck out the jello like blood from your d**k. Smarter everyday did a video on this and it was fantastic.

-pk7677

9. Human facts

Humans have the biggest d**ks compared to body weight among all primates.

-Piorn

10.

Male's testicles have a natural reaction to retract slightly upwards if something brushes the inner thigh. It's an evolutionary trait meant to protect the reproductive system from predators. (Snakes, crazy exes, etc)

-Shufpt78

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