Post cool science facts

>>9013088
Anal opening in men is shaped like a crack but in women is shaped like a star.

Thanks anatomy classes.

>>9013091
why?

>>9013088
https://en.wikipedia.org/wiki/Bean_machine

>>9013091
what seriously you're going to make me have to google this.

>>9013118
be my guess I still remember the class,and the book containing that fact is around here somewhere.

>>9013122
>guest*
uhh

>>9013122
>>9013110
https://en.wikipedia.org/wiki/Human_anus

fuckin hell it's true I'll never forget this fact

>>9013130
>those images
Fucking Wikipedia, I expected drawings not actual images

>>9013130
Have a friendly warning,I let it slip few times during drunken ramblings in front of other people and now Im not in contact with said people.

>>9013130
well fuck me it's true

>>9013088
Clearly, magenta is visible, otherwise how am I seeing it right now?

>>9013161
It's a combination of equal parts blue and red (opposite ends of the spectrum). It's green's anti-colour, and green is in the centre of the spectrum. It makes sense.

>>9013156
>>9013141
>>9013130
>>9013122
>>9013118
Fucking WHY? No, seriously, why? For what reason does this occur?

File: 151736054.jpg (65KB, 350x239px) Image search: [Google]

65KB, 350x239px

>>9013168

>>9013161
Its an abstraction your eyes make. There is no magenta light.

>>9013088
You can actually suppress many symptoms of disease with an antihistamine in a pinch, but doing so over any significant period of time will kill you.

>>9013153
wtf, why would they stop contacting you
if anything i'd be more interested

File: 1478377108940.jpg (447KB, 1600x1200px) Image search: [Google]

447KB, 1600x1200px

>>9013091
Also the male G-SPOT is in his ass :3

>>9013088
The Bogdanoff twins own 99% of DNA editing research facilities on Earth.

>>9013088
>>9013168
>>9013219
>>9013224
but that's the same for every colour...it's just your brave differentiating wavelengths

>>9015042
>brave
brain*

>>9013207
If I had to guess I'd say it's because male and females have different genitals and perineal muscles.