That night, as you slept, the alien seed begins to glow anew with a green light. This time, however, the light is not from the heat of friction but from bioluminescence. The seed begins wobbling slightly on the night stand, gradually rocking itself towards your sleeping frame. Eventually, it manages to make itself fall off the table and onto the sheets beside you.
On a normal night, you would have been wearing underwear and covered by some type of blanket, but this week had been unseasonably hot and humid. Since you didn't have air conditioning installed in the old house yet, you lay on your back in the nude, uncovered so that as much of the ceiling fan's relieving winds hit you as possible. When you turned onto your side in your sleep, you gave the seed the opportunity it had been waiting for.
A loud crack shattered the silence of the night. You woke up suddenly and flipped on your back. Flicking the light on by your bed, your darting gaze tried to discern the source of the noise in your half-dazed state. You saw nothing that could have caused the noise and finally came to the conclusion you must have been dreaming. Unfortunately, you were now fully awake.
You looked over at the night stand out of habit and realized that the seed was nowhere to be found. Before you could begin to panic, however, you felt something thin and slick thrust itself up your ass. You gasped in surprise and reached behind you to find out what it was. Your hand returned with the seed, a long green tendril connecting it to your rear through a crack in the tough shell. Now you knew what the crack that woke you up was. You tried pulling it out, but every movement only managed to lodge it in further.
You gasp again as the process speeds up and the tendril widens. You are an anal virgin and the feeling of something so large thrusting into you is new and disturbing. You try frantically to escape from its hold, but it's no use. Suddenly, you feel something slimy begin oozing out of the tendril. You begin to freak out even more, but the slime has an oddly calmly effect. The seed is sedating you!
You quickly succumb to the heavy drug and feel the tendril push further inside of you, branching out and penetrating organs. The funny thing is, you don't feel pain and you're still doing just fine, your body acting as if there were no alien plant trying to invade it. It was probably another side effect of the drug, but you actually started feeling better: healthier and more energetic...and aroused.
You began to moan as the plant forcefully pushed through every part of your body, taking root in your vital organs, limbs, and even your brain. You loved the feeling of its slimy tendrils rubbing against your insides and filling you with new vitality. The experience was so intense you almost blacked out a couple of times. You found yourself shouting out in pleasure as it worked it's way through you and finally shed the seed, dropping the hard shell on the ground as the last of it slithered up inside you.
There was finally a lull in the action and you collapsed to the bed breathing very heavily, as if you had just run a marathon. You could feel the plant moving around inside of you, but it was nowhere near as intense as before: just slight writhing alerting you to it's presence. You heart was beating like a machine gun and your naked body was coated in sweat. You could barely comprehend what had just happened to you, but since you felt perfectly fine you thought that maybe this plant was some type of symbiote. Hopefully, it wasn't a parasite luring you into a false sense of security, but whether it was harmful or not you knew it was trouble. No doctor on Earth knew what to do about this and if you told anyone you would probably be cut up to explore it, reassembly an improbable outcome. If you let it go, though, it could end up killing you or something else you couldn't even imagine. What could you do?