Szx'ee and Wantu'u floated above the brick and mortar of the sprawling human cityscape, bored silly. For many days now they had watched the humans go about their lives, but none of it made any sense. Why would they get up with the rising of the sun, and then on some days they did not? Some humans lived in large domiciles, but others seemed to have no fixed place to rest, hunkering down in the streets after the sun set. Some humans were quiet, others loud. From their vantage point there seemed no pattern to the humans' behavior.
Their frustration stemmed not only from their ignorance, but from the fact that the one way they could use to understand - the ability to possess these humans, to access their bodies and thought processes - was denied them. They had learned so much during the time they had taken over a pair of humans than all the time since. Their commanding officer had been very clear: observe, but do not interfere.
A shrill cry reached them, echoing from between two buildings. The two ff'kyutes floated down to investigate.
There, surrounded by sweet-smelling human refuse, was a human male and female, and the male was removing the female's clothing.
"I think they are preparing to mate, Szx'ee," Wantu'u telepathically 'said' to his partner.
Szx'ee drifted closer, watching the humans intently. The male had pushed the female to the ground and was seeking to extract his penis from his pants. Szx'ee was glad of its previous encounter with sex, or it would not have been able to understand what was happening.
They it got an idea: "Wantu'u! Since they are going to mate anyway, we can take them over and we wouldn't be interfering!"
Szx'ee was uncertain. "I don't-"
But Wantu'u had already entered the female through her nose and mouth. Like before, there was a feeling of compression, as the alien's senses were inhibited while within its human host. "She" looked up at the man above her, his arm firmly across her chest, still fumbling with his zipper.
She looked over the man's shoulder at the hesitant gas wisp above and shouted, "Szx'ee! Do it! Come on!"
The man frowned down at her, confused. "Whut you talkin' 'bout, bitch? You want it now?"
Wantu'u looked at the man with (literally) new eyes. She hadn't noticed before, but her borrowed white skin contrasted dramatically with his dark brown tone. He had no hair on his head, but a dark...moustache...and...goatee. "Yes, I want it. I enjoy sex, though this will be my first time as a woman. I expect it will be exciting."
The man's eyes grew big. "As a woman? You a fuckin' trannie?" His face contorted into a grimace. "I'll fuckin' kill you!" He raised his fist to strike her, then grabbed his throat as alien smoke suffused his lungs. "GUKK! GHAAKK!"
Seconds later, Szx'ee spoke through the man: "Wantu'u! I think he was about to perform violence upon you! What did you say to him?"
"I do not know, but he said something about a 'trannie'. This body has no knowledge of such a thing." Wantu'u looked down at herself, then without ado started to unbutton her shirt. Her skirt and panties had already been removed by the man.
Szx'ee paused, concentrating on the man's thoughts. "Trannie...a human who has changed their sex. Interesting. This man was filled with rage about such a concept."
Wantu'u had removed her shirt and unfastened her bra. "He was mistaken. This body is female, and always has been. Come, feel it." She took one of Szx'ee's borrowed hands and pressed the palm to one of her ample breasts. "Ooh...yes, Szx'ee, squeeze it..."
Szx'ee hadn't meant it to go this far. He had been concerned about Wantu'u's wellbeing. "We...should not..." But he could not stop his hands. Both were now massaging Wantu'u's breasts. So firm, yet yielding. He remembered how nice his own breasts had felt when he had possessed the girl in the basement days ago. However, this time all the good feelings were centered in one spot: his...cock (dick! junk!). It was straining the confines of his underwear. He released Wantu'u's breasts to unbutton his pants, since the zipper was already down.
As Szx'ee's borrowed cock sprang free, Wantu'u gasped. It was much bigger than the one she had had when she took over the young man last time. She also noticed that, unlike the male body, the sexual feelings were all throughout her body: her breasts, her vagina (pussy!), under her arms...even her toes! She much preferred being female.
Szx'ee's was now poking his cock at her sex, but without much success. "I seem to recall penetration being easier last time. You are...dry." Accessing his host's knowledge, he came up with a solution, moving his face down to her cunt (gash!) and licking all around it.
