No, you and Sarah are all alone.

"Hmm..." Sarah says, smiling a little as she watches the sample in, and on, the container. "Have you always been able to... produce this much in just one ejaculation?"

"Not often... but yes, it does happen..." You tell her, both of you looking down at your still hard member. "And... I don't know for sure... but right now it almost feels like I could do it again!"

"Interesting..." She mumbles, putting down the container on the table beside your bed and then thoughtfully holds up her sperm-covered hand before her eyes. She stretches and spreads her fingers a little, observing the sticky threads forming between them and then, much to your surprise, puts her index-finger into her mouth!

You watch in amazement as she sucks one finger after the other clean of your spunk, and you feel your cock throb enthusiastically.

"Hmm..." She finally repeats, looking at you while smacking her lips as she pulls the last of her fingers out of her mouth. "The doctors only need one sample, but I think they'd like to know if your theory is right... Perhaps we should try and find out, right away...?"

"Uhmm... Yeah... of course...!" You reply quietly, trying to clear your throat while you stare at Sarah as she cleans the rest of her petite hand with her pink tongue...!