You've come in for your yearly medical exam, I start doing a few standard tests with my latex medical gloves on, but am not overly happy with the results so dig a little deeper.
I bend you over, lube up your arse with my spit, finger it and stick the thermometer in.... Well your cock certainly seems to be standing to attention, so let's do some test on that.. with my pussy.. riding you, fucking doggy style, standing up, and eventually getting that sperm sample by cumming in my mouth and I dribble it out into a cup.