I found a copy of "Dr Brown's Book of Best Bonking" in the reference library.
It read "The best bonking is on the D7 planet. Their people are similar in appearance to us earthlings, except they have no anus.
The women all have breasts and vaginas. Their bodies are covered in hair (similar to earthlings pubic hair) except around their breasts and vaginas. Unlike earthlings, they have no clitoris or other erotic zones.
The men all have flaccid pricks of at least 7 inches. Most are endowed with 10 inches, and many with 14 inches. The largest recorded is 18 inches. All have an erect girth of 4 inches.
The average D7 woman has a C cup sized breast, but most have a B cup.
Social status is decided by the size of a flaccid penis or the breasts. The higher the status the more sex a person is allowed. The Emperor has the first chose of any woman and few escape his monster penis.
The low status (7 inch) man might only have sex with 8 women in his lifetime. Whereas a high status (D cup) woman may take 27 lovers in a year. If she sees a lower status man who she likes they retire to a public double bed. A passing member of the public will sheath the man. People then watch as the man gives the woman the types of sex she enjoys.
A D7 man deflowering a D7 woman attracts much attention from a crowd of up to 100.
By law sex can take place only in public.
Their only sensitive erotic areas are the penis and the vagina. Men can sustain their lovemaking for up to 4 hours, but few women choose to be bonked for that long. Mostly sex lasts for about an hour.
Their sex positions are even more varied than earthlings. They seem to believe that variety is the spice of life.
As a population control measure sex has to be with a sheath (condom) unless the Emperor decrees otherwise. Human sperm has millions of tadpole like creatures. Their sperm has 5 large tadpoles. The woman produces 5 eggs. Unprotected sex is 100% effective. So a woman will automatically bear 5 children if a condom is not used."
Dr Brown concluded with this statement "For females with large breasts, and a larger libido, D7 is the perfect planet. The men on earth are boring in comparison with those on D7."
ESCAPE
My 2 older sisters (Rose and Heather) and I decided that we needed to get to planet D7. My sisters have D sized breasts but mine are double D sized. We would all be high status. We all and wanted an unlimited supply of large cocks. We all resisted the urge for sex with mere human men.
What woman wouldn't want a crowd of 100 people watching a monster cock take her virginity? Especially if we could take any man we desired and have as many cocks inside us as we liked.
THE ESCAPE
When I was 18 we purchased an old Mark 45 space rocket. I set the coordinates to D7. As is inter-space protocol we all stripped naked so the computer could prepare passports which it sent to D7 control.
Our nude photos got us entry approval into D7. We all went into hibernation mode for a year. We arrived at D7 and the Mark 45 space rocket woke us from our hibernation.
D7 control sought visual contact. We stood naked before the camera so they could confirm our passports. The ship's auto-camera scanned us full frontally and then we had to turn and it scanned our buttocks. D7 control still weren't satisfied that we were the same people as in the passports. They took control of our auto-camera. Each of us had to stand naked as the camera searched every crevice.
We had to part our pussies to show D7 control that we still had the membrane covering our cunts. Finally they were satisfied, though I think that they knew who we were. I think D7 control were just getting their kicks making us expose our human bodies.
As is space protocol a doctor must come to see us inside the rocket. We might have a deadly disease.
It felt cold as I opened the rocket door. My nipples expanded in response to the lower temperature. But the air was extremely pleasant. I imagined it was like earth's air was before industrialisation polluted our planet.
THE DOCTOR ENTERS
The doctor had a 12 inch flaccid penis. We were all impressed. He must have assumed I was the leader. He questioned me about our bottoms. I explained about the disposal of waste matter from the front and the rear. I said that most humans eat 3 meals a day plus snacks and drinks.
The doctor said "Our planet doesn't have the resources to let us eat such a large diet. We only eat an ounce of porridge and drink a cup of water once a lunar month. We therefore have no need of such complexity. Our women's vaginas, and our men's cocks, are purely for reproduction."