Right here. Right now.

Looking into the doctor's eyes, you say, "Well if it's important, we should take care of this right away."

"Oh it's very important," she says as she undoes your pants, letting them fall to your ankles. Looping a finger into the waistband on each side of your boxers, Dr. Katari drops to her knees, bringing your underwear to the ground in the process. She wraps a hand around your now naked cock and starts stroking. "Mmm you're already nice and hard." She stands back up and shrugs off her coat, finally fully revealing her nude form to you. Her nipples stand at attention atop her plump mounds. "That means we can proceed to testing." She hops up and sits on the edge of her desk, opening her legs to you. "Show me what you've got, big boy."

You step in between her legs, her pink lips already glistening with wetness. Dr. Katari takes hold of your cock again, pulling you forward by the dick until your head can feel the warmth radiating from her pussy. She starts rubbing your head against her moist slit, softly moaning with each stroke. You move yourself a little closer, pushing yourself inside bit by bit. Kitty lets out a gasp as your cock suddenly slips through her lips, deep inside her. You grab hold of her hips and start up a rhythm. She leans back with her hands on the desk, her breasts swaying with each thrust.

"Oooh...yes...right...there," she gets out between breaths. Not one to disobey directions from your doctor, you keep at it. "Oh....Oh....OH!" Kitty tenses up as she cums, falling back on the desk while her hips raise up. You slow down, giving her a chance to catch her breath.

"So did I pass the test?" you ask.

She grins up at you. "The first one." Her leg kicks up and she twirls herself around while still keeping you inside. Now you're staring at her creamy white rear end. She looks over her shoulder at you. "But we still have to do more testing to be safe." Without waiting for you, those hips start grinding and she's fucking you again. You grab hold of her hips again and return the favor, fucking her from behind. The wetness of Kitty's pussy makes it an easy task, but also an increasingly loud one. Between the sounds of your dick sliding back and forth and the moans of the doctor, you're really glad that the only other person around decided to leave for a break. "AAHHH!" A short shriek snaps you back to attention as Kitty swiftly achieves her second orgasm, this time dripping out little droplets of cum around your dick. You give her ass a good squeeze as you pull out, inadvertently releasing a stream of girlcum that starts to trail down Kitty's leg.

"Surely that has satisfied you."

"Mmm yes..." Kitty sighs. "No! I mean, I'm satisfied, of course, but you have not orgasmed yet. This could be a very serious problem if you cannot cum."

"I've never had someone complain about my stamina."

"Oh it's not a complaint. Believe me. Plus there is still one type of penetration we have not tested..." She wiggles her ass at you as a hint. You rub a finger up her pussy to scoop up some of her slickness and start spreading it over her welcoming anus. She starts giggling in anticipation as you bring your cock up into position. And you slowly ease your way in. The doctor almost collapses limply against the desk as she loses control with the pleasure hitting her.

"Knock knock, Dr. K?" The office door suddenly opens and standing there in full uniform is the one and only Supergirl.

Oh fucking fuck