Katie giggled a little.
"What?" Tiffany asked curiously.
"I dare you take some of the strange liquid!" Katie said.
"And do what with it?" Tiffany asked.
Katie thought for a moment. "Maybe you need to drink it? Or maybe it is a soap or a lotion," she said.
"Hmmmm..." Tiffany said out loud.
"What?" Katie asked.
Tiffany said, "Just thinking about what to do with it."
Katie asked, "What do you think you will do?"
Tiffany answered Katie's question by undressing. Soon she was completely naked. Katie couldn't help but see Tiffany's nakedness. She had seen Tiffany's boobs and crotch before, so it wasn't anything new.
Tiffany took the liquid. Then...