Time to make up some fake customs!

I realized I had an easy out for this. Forcing my fake accent on thick, I began to ad-lib.

"Since everyone walks around naked, popping ere... erec... how you say... boners? Yes, popping boners is quite common. Sometimes, they can wind up accidentally rubbing against things, which can lead to cumming in public. It's always an accident, so my people understand and look with sympathy. Normally it's considered polite manners for the one who saw the cumming to clean up as a show of understanding, but I know America has different customs, so I will clean it up to show my apologies for being rude." That might be the most bullshit I've ever vomited out like an improv actor. I just hoped they'd buy it!

Luckily, Kathy was nodding in understanding. Jackie's face was flushed red, bespectacled eyes locked on my cum-dripping, spent penis, but there was sympathy on her face. Kathy reached over to Jackie and pulled her cardigan off, causing her friend to visibly stiffen and blush. Without it, I could see that her dress was strapless, and without the cardigan to cover her chest, I could see it blatantly left almost the entire top halves of her breasts completely bare. It looked to be one nudge away from a nip slip, something Jackie seemed to realize from how flushed her face was. Still, she didn't protest as Kathy used Jackie's cardigan to wipe the cum from her sundress, then bundled the dirty garment up into a ball and turned to walk away.

"Hey, don't sweat it, bro," she said to me, grinning and winking over her shoulder. "Anyway, let's head to the dining hall!"

As Kathy got a headstart, Jackie walked forward, her huge breasts noticeably trembling with her steps. She reaching up to rub my shoulder in an affectionate, placating gesture. "It's okay... You couldn't help it. I'm sorry my hug lasted so long... Kathy always said that I'm a bit clingy..."

Her eyes focused on my cock, seemingly transfixed on it as her hand moved from my shoulder to my chest, rubbing like she was petting a cat. Each motion of her arm caused her elbow to bump into her braless breast, pushing it against the other to create a deep, prominent cleavage. "Um... I like your outfit," she said, her voice soft and quiet. She blushed, no doubt embarrassed at her awkward compliment. Her hand moved from my chest to my stomach, stroking in a soothing way that sent tingles up my spine.

But as she pointedly looked at my naked penis, I turned red. My cock twitched and lurched upward, erecting even though I'd just cum. Jackie stroked lower on my belly, below my navel, her forearm grazing against my boner with each stroke. The touch made me inhale sharply. She looked at my engorged dick, watching her forearm graze against it as she performed her tender ministrations. She looked mesmerized watching it sway and bob with each stroke. After it started leaking a bit of precum, she looked back up at me and smiled. I had to say, it took my breath away. She was a shy and slightly plain-looking girl, but when she smiled so genuinely and warmly like that, it caused my heart to race. "I think I like it better this way..." she whispered, obviously referring to my raging stiffie.

"C'mon, you two! I'm not waitin' up for you!"

Jackie and I both jumped in alarm, the girl hastily pulling her hand away and bumping my bouncing cock. The surprise jolt caused her boobs to pop out of her dress and I was greeted with a pair of curiously inverted nipples that looked too small for the huge tits they were on. She let out an "Eep!" and hastily tucked her boobs back into her strapless sun dress. Looking up at me and clearly embarrassed at her wardrobe malfunction, she managed a shy, awkward smile.

"Um, let's go..." she mumbled, reaching her hand out. I instinctively took it and off we went, my hard cock bouncing in front of me and Jackie's unsupported tits bouncing in front of her.

Wow, this was kinda surreal...