Just a towel

You step out of the shower and pause for a moment, realizing that your clothes from before have disappeared and been replaced with a large bath towel. Did Barbara come into the locker room while you were relieving yourself? You hoped not but it was entirely possible, as Batgirl, as well as all heroes and heroines associated with Batman, could stealth past any manner of vigilant sentries. You redden as you consider the scenario where Barbara saw you jerking your cock, or even worse, moaning her name as you fantasized about her and Zatanna.

Or, there was the possibility of it being taken care of by some robot. Surely Batman was smart and/or rich enough for an automated solution. That's what you were hoping anyway. You dry off and wrap the towel around your waist, and seeing no clothes decide to walk back out to the main portion of the Batcave.

Once there, you see Barbara nervously pacing back and forth, as if in argument with herself. Upon hearing you enter the room she stops, turning to you with a face of determination. She must be putting on a brave face, you think to yourself.

"Alright, we only have one more thing left Shad. I need to examine your penis."

You do a double take, startled heavily. "But.. Why would you need to do that."

"Two reasons Shad. The first is familial history of testicular cancer. Your risk of heart disease can be monitored with data, but the only way to monitor testicular cancer is regular examination, both by yourself and during your yearly checkups by a practicing doctor.

"The second reason is your consistent lack of orgasm when engaging in sexual intercourse. I know that you say that it's because the women you're with pass out, but I need to ensure there isn't some underlying issue there that causes an uncomfortable backup"

You nod slowly, and upon seeing Barbara begin to put on latex gloves you walk up to her and murmur, "Sounds good." You undo the towel knot, and let it drop to the floor on a wet heap.

Barbara looks up from her notes and sees your cock bobbing, and for the second time in the last twenty-four hours you see a woman exhibit a clear cut case of cock shock. This time, though, she works through it quickly and begins to examine your testicles, searching for an abnormal growths.

It only takes several seconds of her ministrations before you start experience a very natural growth. Despite cumming less than five minutes ago, your penis starts to rise, hardening as quickly as quenched steel. In fact, just knowing that the superheroine starlet Batgirl was touching it made it feel as hard of steel.

Barbara has noticed your erection, of course, and tries to imitate a doctor by soothing you. After pulling off, she says, "Don't worry, an erection is very normal for patients during examinations. Don't feel bad on my account."

You blush, which it seems you've been doing a lot, and respond, "It's not just that. A woman like you on her knees in front of me, I'm not surprised to get erect. It's more of the fact that I came not even five minutes ago."

"You did? When? In the shower?"

"Oh. I figured you knew, from when you took my clothes and gave me a towel."

"That was Alfred. He's been Bruce's butler since childhood."

You groan in embarrassment. What a great first impression to make your first time in Batman's home. Inadvertently jerking off in front of a kindly old man.

"Don't worry, I'm sure Bruce himself has exposed himself worse throughout the years."

You shake your head in mirth, as you enjoy your back and forth with Barbara. You catch yourself, because just because you look young doesn't mean you aren't old enough to be her father. In fact, you think James was only a year or two older than yourself. You attempt to will yourself to soften, but it becomes apparent that it is fruitless.

Barbara seems to realize this as well, and she says, "Well, since I don't want to wait for this monster to go down, I'll continue the examination. Congrats, by the way. You are very blessed. Just how big is it?"

"Uh, twelve inches. And thanks, but I can't take credit. It's an effect of the nanobots, and while I was above average before its since gone to a whole new level."

"Huh." Barbara says, mostly to herself. "I wonder, that's at least two effects of the nanobots impacting your sexual organs. I wonder just how sexual in nature the nanobots effects have been, and how they impacted you in total."

"Who knows. My terminal illness wasn't sexual in nature, so I'm not sure how the nanobots thought my penis was in so dire need of improvements."

"Is that how you see them working. They 'improve' you?"

"I mean, you've seen the tests we've done. It seems like everything I've been able to do is an improvement."

It's this point you notice that Barbara has been very intimate in her examination. To your untrained eye it seems like she's already looked over every part twice already, and she's still going. Not that you're complaining; Batgirl stroking your cock is absolutely glorious.

A notification from the large monitor bleeps twice, breaking the spell and causing Barbara to withdraw totally, removing her hands and even getting up and walking over to the monitor. You sigh in disappointment, your cock already missing her lovely touches.

"Huh," Barbara speaks up to you while focused on the screen. "That's interesting."