You invite John over to your apartment

Over the next few days, the embarrassment brought on by prematurely ejaculating into your pants while making out with John eases a little, superseded by the memory of how good it had felt to have his body pressed against yours. Finally, you invite John over to your apartment and within the hour he arrives. Right away, there's a definite vibe - both of you are remembering the last time you were together and wanting to do it again. Still, once you start kissing, the embarrassment of accidentally cumming in your pants last time gets to you, making you awkward and shy. John senses this.
"I know you're embarrassed about what happened last time, but honestly, it was so hot," John says frankly, "I really enjoyed myself, and if you hadn't left, I probably would've cum just from grinding on your leg."
"I enjoyed myself too," you blush, "I mean, obviously."
"Obviously," he says, smiling. He leans in and kisses you, and you relax a little as you reciprocate. Then, he straddles your lap. Your micropenis is instantly rock hard.
"Is this okay?" he asks, "Should I keep going?" You're nervous, but also turned on.
"We can keep making out for a while, right? I still don't know if I want to get undressed," you confess.
"Sure," he says, "Is it okay if I take my shirt off?"
"Sure," you reply. You try not to sound too ****, but there are few things you'd like to see more than John undressing.

John pulls off his shirt, revealing his gorgeous body. He runs his fingers through your hair as you kiss his bare chest. He begins to grind on your lap, hard enough that it stimulates your tiny erection, making you moan.
"Fuck, grinding like this feels so good on my clit," he breathes, kissing you.
"Mine too," you say, before realizing that you've just accidentally called your dick a clit.
"I mean, uh, it feels good for me too," you say, immediately trying to cover it by kissing him again. He either doesn't notice or lets it slide, to your relief, and simply deepens the kiss. You can feel your cock beginning to leak precum, dampening your underwear and making the movement of John's hips feel even better.
"Can you tell me something?" he asks after a few minutes.
"Sure," you say.
"How do you jerk off?" he asks. You blush. Sensing your hesitance, he goes first.
"I usually jerk off by rubbing my clit, or using a vibrator on it," he says, "I dip my fingers in my wet pussy for lubricant, and rub it between my fingers like I'm jerking a tiny cock." You gasp in arousal. The thought of John jerking off is almost too sexy to bear.
"I kind of do the same thing," you tell him, "I just kind of rub it, since it's too small to fit in my fist. I've never tried a vibrator, though."
"I'd like to see you try a vibrator some time," he says, "I bet you'd like it."
He continues grinding on your lap, moving his hips faster and faster. You find yourself moaning and clutching at his back and his ass, wanting more.
"Fuck, you turn me on," he gasps, "My pussy's so wet."

He turns around and continues grinding, essentially giving you a lapdance.
"Do you want to feel how wet I am?" he asks.
"Yes!" you gasp. It's too good an opportunity to pass up. He guides your hand to his waistband and he continues grinding as your hand plunges down to his warm pussy. The juices from his hole lubricate your fingers, which trace around his sizeable clit. You moan, burying your face in his shoulder. You feel like you're going to explode, and it seems like feeling the same way, judging by the way he's breathing.
"Fuck," he says, "Your fingers feel so good."
You can't answer, you're so aroused. Your balls feel like they're going to explode, and you can't help but pump your hips up and down as you rub his clit.
"I think- I think I'm-" you gasp, "gonna cum soon."
"Me too," he says, breathing heavily.

You groan as your micropenis twitches. John cries out in pleasure as you feel his clit throb hard between your fingers. You realize that he's cumming. You're making him cum. The knowledge that John is having an orgasm because of you sends you over the edge. In your shorts, you unleash a powerful, explosive orgasm. Your cock spasms in your shorts, spewing out a massive stream of cum that soaks through your underwear and shorts. John slowly stops grinding as you both come down from your orgasms.
"I can feel your cum soaking through the seat of my pants," he laughs.
"Sorry about that," you say, grinning

He stands up, and you see just how much of your cum got on his pants. He looks at the mess on your crotch and you both giggle.
"We should get cleaned up," he says, "Do you have a washing machine?"
"I do," you inform him.
"Well in that case," he leans down and kisses you, "how about I get out of these dirty pants?" You nod and he makes a show of slipping off his pants and underwear, revealing his naked ass. Even though you just came, the sight of John fully nude causes your cock to stir in your cum-soaked pants. You reach out and touch his ass, running your hand over one cheek before you stand up and kiss him again.

"You know," you say, "I could go for a round two."
"Me too," he says, "Let's do it."
The two of you move to your bedroom, where he asks:
"So, how do you want to do this? I brought my strap-on in my bag, just in case."
You're not sure, since you've never really thought about it. When you jerk off, you usually imagine that you have a big dick and that you're fucking your partner with it, but you know that in reality, things will be different because of your micropenis. You explain this to John.
"My harness has adjustable straps," he offers, "If you want to wear it, you can top without having to worry about it being too small."
You think it over. As a cis man, the idea of wearing a strap-on is daunting. John sees the hesitation on your face.
"Or," he says, "we can leave strap-ons at the door, get naked and see where it takes us? Hell, we don't even have to get naked if you don't want."