Let the alien do all the work

You're too spent to move. You lie still and let the alien's tentacles envelop and rub all over your cock.

You feel wonderful inside me, she thinks to you.

You feel beyond wonderful, you think back. You're going to make me fill you.

That's the idea, she thinks back at you.

You wait for the inevitable. In mere moments you blast yet another massive load of cum. The alien smiles down at you.

She rises, and an older alien woman approaches. I'm the ship's captain. You will do nicely. But just to be sure, I'd like to test you myself.

And you'd like something in you that's alive.

Yes, that too.

When did you have in mind?

If you can handle it, now. Otherwise I'll do you after you rest.