The two aliens continue tag-teaming her for some time; one doing the fucking while the other observes and takes notes before switching off. Erica is lost in pleasure, experiencing orgasm after orgasm. Strangely, though, neither alien has ejaculated yet - she assumes they have some advanced control over their own bodies that human men could only dream of.
After what seems like an eternity, the alien currently fucking her slows down and talks with his partner. Apparently they've gathered all the data they need on the sexual prowess of the human female, and it's now time for them to finish off their beautiful captive. The alien that's currently penetrating Erica starts pounding her again, harder than ever before, and blows a monstrous load into her womb. After he pulls out, Erica can see that the sperm leaking out of her is bright green in color. She hopes that he didn't just impregnate her.
She doesn't have much time to think about it, though, because the second alien pulls her off the table, forces her to her knees and puts his alien cock in her face. She gets the hint and takes it in her mouth, sucking as much of its length as she can while using her hands to massage the rest. Soon she feels the alien penis start to pulsate, and the alien pulls it out of her mouth, aims it at her forehead and blasts another giant load of green semen, which ends up covering her face and running down her breasts and belly. Erica collapses to the floor.
The two aliens stand over her, apparently pleased with their conquest of the earth girl. One places his hand on her head, and she blacks out. The next thing Erica knows, she's back in her own bed. She wonders at first if it was all a dream - but, she's still naked and quite sticky, and she knows that while no one will believe her story, she'll always have the memory to look back on.