You cum in your own mouth

You're not sure how long you it takes you in your euphoric haze to cum. It feels like it could have been mere seconds, or half an hour for all you knew, but eventually you do, coughing, moaning and spluttering as Eva pulls out of your throat before glazing you with your own cream.

One of the pearly spurts pools in the bottom of your open mouth and you feel ropes of goo ooze down your face and chin as you draw in deep lungfuls of precious oxygen.

"Oral demonstration complete. Fluid transfer looks to be within normal male parameters. Subject was able to achieve self-completion..." Eva notes down at you studiously, seemingly not fazed in the slightest by the intimate nature of the testing. She flicks the last few drops of cum from your dick against your mouth.

Disorientated and feeling strangely elated, you spit out your mouths contents and wipe your saliva and cum-smeared lips with the back of your hand.

"So, are we done then?" You pant, hoping that the experiment was over now and that you could get your credits.