Unsurprisingly, I didn't hear from Emily or Rachael the day after Rachael and I slipped Emily a sleeping pill and then used her unconscious body, per Emily's request. We'd recorded the whole thing so Emily and Rachael could watch the video the next day for bedroom inspiration, also as requested by Emily. Surprisingly, I did get a video call from Rachael the morning after their watch party. "Hey, so, Emily is mad about the middle part of that video," she told me, referring to the part where we'd stopped molesting Emily and taken some time for a slow, gentle lovemaking session next to her drugged body.
"Surprising no one," I replied, since I'd asked if exactly that would happen.
"She says -"
Muffled commotion ensued, and the view of their apartment on my screen spun wildly, after which Emily's face appeared. "You owe me, mother fucker!" she spat. "You made sweet love to my girlfriend and I didn't get to watch, nor did I get to enjoy all the dirty shit you did to me that night as it was happening." Her face and tone softened considerably. "You two made the sexiest, sweetest love scene ever recorded." The aggressive, lecturing tone returned, complete with a purple fingernail repeatedly stabbed at the screen for punctuation. "And I DESERVE THAT TOO. You're gonna sweep me off my feet and treat me like a princess, and then you're gonna take me home and make sweet love to me. And you're gonna sex my butt good the next morning, like a horny slut deserves." She grinned sweetly while batting her eyelashes at me.
I laughed loudly and dropped myself into a chair. "OK, I can handle that. Can I make brunch for you and Rachael today so we can talk about some big news for me? Scheduling our date can be part of that chat."
"Totally! My place or yours?"
"Yours works better. I'll explain why when I get there. An hour sound good?"
"Yup! That gives us plenty of time to find slutty things to wear." She reached off screen and dragged Rachael's face back to her, kissing her firmly as the call ended.
They answered the door to Emily's apartment wearing somewhat matching lingerie. Rachael's skimpy bikini briefs and matching bra - a glistening, shimmering, candy apple red - were simple, while Emily's bra and thong were lacy and ornate, but the same rich red. They took the two cloth grocery bags I was carrying and set them aside. I wrapped my arms around both of their waists, and pulled them tight against me. Rachael took the opportunity to dig her nose into my chest for a deep breath of my usual dark and spicy cologne, while Emily presented her lips for a kiss. I shoved one hand into Rachael's panties to grab her ass, and my other hand easily found Emily's exposed cheeks. They both purred as I alternated kissing them softly.
The hug full of fondling broke up when Emily's stomach growled loudly. She grabbed Rachael's shoulders and spun her to point her ass at me. "Before you inspire dirty stuff by cooking for us, tell her that she needs some thongs," Emily insisted.
"Well, I certainly wouldn't object to taking a thong off her, but being comfortable and feeling sexy is more likely to get her in the mood." I swept Rachael's sandalwood-scented hair to the side and kissed her neck while I squeezed her ass. "Do you feel sexy enough dressed like this, or would you like to be as slutty as your girlfriend and walk around with your ass in easy access mode?"
She moaned and pressed herself into my hands. "Do you think me wearing a thong would make you want to fuck me more?"
"Hmmm. That's a very good question. Given how much I want to fuck you right now, it seems unlikely, but let's do an experiment." I released her, grabbed Emily by the hair, pushed her face first against the door, and grabbed her ass with both hands.
"Yes!" Emily wailed. "Wake and fuck! Give it to me so hard right here the people outside can hear it!"
"Shhhh, you're tainting my experiment." I slapped her ass hard once before I started squeezing and kneading it, gathering empirical data. After a moment I twisted her to face me and kissed her deeply. "Thank you for your participation." She panted at me with hard eyes, clearly frustrated with the teasing.
I turned to Rachael and pointed at the wall beside Emily. She smoothly took up a position beside her girlfriend with a giddy, lusty smile and pointed her ass at me with a quick wiggle. I fondled her like I had Emily, ending with a hard smack.
"So?" Emily prompted when I stood back to stare at their barely covered bodies.
"Too soon to tell. The experiment is only half over." I yanked Emily's thong to the floor, turned her back to the door, and spanked her hard several times. "I have to do the control group research now. Otherwise I can't answer the question of whether I like Rachael's underwear or Rachael's ass more." Rachael's panties found their way to the floor as well, and I paused to take a few close up pictures of their feet with their underwear around their ankles before I spanked Rachael. Once she showed some clear palm prints I took group and individual ass portraits.
"I'm ready to present my conclusions," I told them. I handed Rachael my phone and let them browse the new images while I reached between their legs from behind and rubbed their pussies gently. "My findings seem to indicate that the most important detail of anything you two wear is the likelihood I'll get to remove it. As long as you both stay the eager sluts you are, whatever you are wearing will be similarly sexy to me. The sexier you feel, the sexier you'll be." They pressed themselves into my hands and smiled at each other. "I do need to say it's easier to spank and fondle someone while they're wearing a thong." I swirled my tongue around Rachael's ear and slipped a finger slowly into her. "So, if you want beaten and raped in public, you might want to invest in a couple; however, no panties at all will work just as well. It seems to me what you both need to do is spend some of your underwear budget on short, loose skirts. Miniskirts go well with car and movie theater sex."
"Perpetually nudity sounds pretty good to me," Emily advised as her hips invited me inside her. I accepted her invitation with a satisfied, "mmm," from her.
Rachael thrust a hand into the air like a student eager to answer a question. "Fucked in a field during a rainstorm for me, please!"