Jon heard the door open and instinctively said "Occupied"
"No kidding" he heard Karyn say from the doorway as he heard her close the door.
Jon could Karyn's silhouette through the shower door and could tell that she was naked. A moment later the shower door opened and Karyn stepped in with him.
"Um... hi." Jon said nervously.
"Hi yourself." Karyn said stepping closer to him and leaning in to kiss him.
Jon didn't resist and leaned in to the kiss. As they kissed, they embraced and ran their hand up and down each other's backs until finally settling on their lovers butts.
Jon was really turned on, his vagina was hot and wet not just from the shower. He was wondering if he dared take things further when he felt Karyn move one of her hands from him butt around to his crotch and begin caressing his pussy. That was enough of a signal for him. He broken the kiss and brought his mouth down to one of her breasts and gently kissed her nipple.
Jon moaned as he felt Karyn's finger caressing his pussy. He thought she was going to remove it again so that they could have sex, but he realized that he was wrong when he felt her slip a finger into his vagina. It was the first time he'd ever been penetrated; all the previous times he or someone else had touched his pussy, they had only touched his vulva and mostly just his clitoris. This was new and it was really exciting.
As Karyn slid her finger in and out of him, Jon slowly spread his legs to give her better access. Eventually he had to lift his foot and put it on the built-in soap tray to keep his balance.
"If you think that is good," Karyn said, "wait until you try this." Jon saw he reach down to pick up something that she had set down when she first entered the shower. He looked and saw that she was holding a penis about the same size as his own. He wondered for a second why she would bring an extra penis instead of just removing his vagina so he would have his normal penis back when he saw that giving him a penis wasn't her intent. Karyn brought the detached penis to her own crotch and it suddenly stood up fully erect.
Jon briefly considered telling Karyn that he didn't want that but changed his mind when she began rubbing the tip of her new penis back and forth along his slit. Each time she rubbed backward she would let the tip get a little deeper a little closer to penetrating his vagina. Then she let the tip slide in a little ways, not too far, just enough for Jon to know that it was there and then it was gone again. With the next rub, the whole head of Karyn's penis was inside of him and Jon knew he going to let her fuck him. She withdrew one last time before, on the next backward motion, she sank the first several inches of her penis into Jon.
Jon cried out in pain as he felt his hymen ripping and in extacy at the feeling of being penetrated for real for the first time. He felt Karyn begin to withdraw her penis and knew that he couldn't let that happen. He rolled his hips forward and leaned into her and was rewarded with the feeling of Karyn's penis sliding deeper into him than anything had ever been before. She moaned deeply and Jon didn't stop his advance until her entire length was in him and he felt her balls pressed against him.
They stood that way for several seconds neither wanting or daring to move. Then slowly Karyn began to rock her hips a bit causing her to slide in and out of Jon a little at a time. Jon began rocking his hips as well and soon the young lovers had built up a rhythm that was driving them both toward their goals.
Jon came first, a wave of orgasmic bliss unlike any he had felt before roll through is body. The female orgasm that he'd experienced the day before paled in comparison; it was nothing like cumming with his lover's penis inside of him. The contractions of jon's vagina during his orgasm quickly pushed Karyn over the edge as well and she buried her penis as deep into him as she could and released coating his insides with her seed.
Though both of them felt weak in the knees and wanted nothing more than to collapse from exhaustion, they both managed to stay standing.
"That was..." Jon started to say.
"Amazing." Karyn finished for him.
"Yeah." he agreed.
They were still embracing each other a few minutes later when the water of the shower began to grow cold. They quickly turned it off and stepped out.
As they were drying off, Jon noticed the sticky mess that was oozing slowly out of him. "Oh god." he said.
"What?" Karyn asked slightly alarmed.
"We didn't use a condom." he answered. "And my mom was just lecturing me last night about using one every time I have sex."
"Well, you know what they say, 'Birth control is a woman's problem'" Karyn said smiling before leaving and heading back to her bedroom.
Jon's mouth hung open. He couldn't believe that she had just said that and walked off.
