Explain how it works. REALLY explain.

Kaylee blushes, her eyes widening a bit. She just stands still, stammering a little bit to explain. You clear your throat a bit and speak up. "Well... River... It's fun!"

She turns to you and raises an eyebrow, "Fun... It looks strange..."

You continue, "Well its pleasurable, it feels great."

"Did you feel good?" River asks Kaylee. Kaylee nods, "It's not great for me at first, but it makes your partner feel really good. And usually... Usually more comes later." Kaylee looks at you, a little disappointed now that it seems like the two of you won't be having any more alone time.

"You seemed to like tasting it..." River leans in before either of you can do anything and pins Kaylee to the wall, licking your cum off her cheek. She makes a face. "Not delicious..."

Kaylee is somewhat stunned, and despite the situation you are turned on like crazy watching River.

Kaylee stammers, "Well it... It's an acquired taste. Like... You really enjoy it the more you try it... Do you understand?"

River looks like she's thinking a moment, "Acquired taste, not really tasty but your mind tells you it is... You want to have sex so you do this to arouse your partner?" River looks at you. She looks down a moment and smiles before leaning back into Kaylee and licking more of your cum off her face.

Kaylee looks shocked at first but doesn't try to move River as she laps up more semen. Kaylee squints as it continues. River spots some cum on Kaylee's lips and starts licking. Kaylee's mouth opens in surprise... Not just surprise but delight. She gasps as River darts her tongue into her mouth.

You stare, your jaw hanging open. You're not quite sure what to do... If anything.

As River basically makes out with Kaylee trying to drink up more of your cum Kaylee's eyes roll back in her head. Passion overtakes her and she starts kissing back. River is a little surprised at first but she was already overtaken by the warmth growing in her and she forgets the objective, kissing Kaylee back.

The two part for a moment, looking over at you. These goddesses look at you with fire in their eyes. River speaks up, "Show me..."

They look down at your cock, already hard again and still out for the world to see.