(Just taking the story and flipping it to the other scenario.)
The orgasm had taken more out of Jon than he had thought. As he felt the warm sticky sperm spreading out in his purple pajama bottoms he drifted to sleep with a smile on his face. When he woke up again, only moments later, Jessica had disengaged herself from him and left the room. He could hear the water running, so he guessed that she had taken advantage of the shower.
Karyn and Stephanie were standing at the foot of the bed staring at him.
"Oh, he's awake!" Stephanie said excitedly, "We can get started!"
"Wait there, Jon, we'll be right back," Karyn giggled, then the girls disappeared into the hallway. Moments later they appeared again, both wearing different outfits. Karyn was wearing a grey v-necked sweater and a black miniskirt, something you would expect a girl working in an office to wear, except for a couple details. The skirt hem was far too high, showing the tops of the black stockings she was wearing and the garters holding them up. Her heels were black as well, matching the skirt perfectly.
She was hot.
Stephanie wore something quite the opposite. Her hair sported a pink and blue headband, her top was a pink and blue shirt that left a lot of skin exposed and matched the pink and blue bands she wore on her wrists and her pink and blue ankle warmers. She was wearing a flirty white pleated skirt and high heeled chucks with the toes cut out of them.
"So Jon? Which one?" Karyn asked excitedly, showing herself off as best as she could.
"Which one what?" he asked back.
"Which one do you pick, silly!" Stephanie's husky voice jumped in.
"Yeah, which one is better?"
Jon looked at the girls hungrily. He didn't know what was happening to him, but he liked it. He considered both of them for a moment then chose.
"Karyn. I pick yours. Definitely hotter."
"I knew you'd me mine!" She smiled with pride, and immediately began stripping. Stephanie looked disappointed, but turned and helped her friend disrobe.
"Um, what are you doing?" Jon inquired. Why was she getting undressed? Were they to have sex? If so, he wasn't sure he'd be able to at the moment, after the amazing orgasm that Jessica had just given him.
"Getting undressed, you goof," Karyn answered. "We can't both wear the same outfit, can we? Stephanie, since Jon's wearing mine, can I borrow some clothes today?"
Jon watched the girl undressed and thought to himself, "What the hell is going on?"
