Since that day, Rachel and I hadn't had a chance to be alone together. It was sort of a rare occurrence, last Sunday, that we were alone at home together while our Mom wasn't around. It's normal for me to be at home, and it's not unusual for Mom to postpone grocery shopping until the weekend, but Rachel would usually be out of the house on a Sunday doing God-knows-what. She had come home late the night before, so maybe she was just tired, or hungover, or both.
On Monday, the day after we had first fooled around, she flashed her butt to me as she was walking out of the living room to go help our Mom in the kitchen.
Then Wednesday night, while we were sitting together on the couch watching Brooklyn 99, she put her hand on my crotch and leaned over towards my ear.
"I keep thinking about your cock in my ass," she whispered to me. I instantly became hard. She grabbed it and stroked it a little over my pajama pants.
Our Mom was passed out and snoring in the chair in front of us, facing the TV.
"It felt so fucking amazing. I wish I could be in your pussy, too," I whispered back to her as she kept rubbing my dick.
"Well," she said back to me in a low voice that was no longer quite a whisper, "Maybe we can do a little of that sometime. But we can't, like, straight up fuck like that. Pre-cum is a thing, you know. And you definitely couldn't cum in me that way. I'm not on the pill right now."
Suddenly, we heard our Mom clear her throat. Rachel withdrew her hand, and scooted about half a foot away from me. Had she heard what Rachel had said?
We both stared at the back of her head, and breathed a silent sigh of relief when she began snoring once more. She hadn't heard, and nothing else happened that night.
Then at last it was Friday, and this was the day I was waiting for. Every Friday at 6PM, our mom leaves for a couple hours for a Yoga class. She was on her way out the door when she looked back at us to ask what we wanted her to bring home for dinner. We agreed on Domino's; 2 deep dish pepperoni pizzas with extra cheese. My sister and I were tasked with making a big salad for the three of us so we wouldn't all die of a pizza overdose.
The backdoor closed and we heard the car start up and pull out of the driveway. "I think we'd better get this salad out of the way," Rachel said to me. I agreed, and we made our way to the kitchen.
I got some lettuce out, and began shredding it by hand and putting it into a big bowl. Rachel was chopping up a tomato, some onion, and a few leftover bits of green bell pepper. We combined it all, and popped it into the fridge. We'd add dressing and feta cheese to it when it was time to eat. Then we made our way into the living room, and both plopped down on the couch next to each other. I snatched the remote before Rachel got a chance, and put on a Bill Burr special on Netflix.
"Ugh," Rachel grimaced, "why do you like this guy? He's totally sexist!"
"No he's not! Well, maybe a little," I said back to her.
"Maybe a lot, you mean?"
"Yeah, maybe... but he's still funny as shit."
"Yeah, yeah," Rachel said. "You're just another sexist Bill Burr fan. You've lost the radical feminists."
We had a good laugh and kept watching the special. After a few minutes, and without a word, Rachel moved her left hand over to my crotch and started feeling around. I got hard instantly, and she gripped it over my pajama pants.
"You know," she said to me, "if you really aren't a sexist then maybe you should prove that you love women."
"Oh?" I asked her. "And how would I do that, exactly?"
"Well," She began, as she started to remove her panties from under her long t-shirt, "I think this time it's your turn to make me cum." Her panties were now around her left ankle. She looked over at me and smiled as she lifted her shirt up over her pussy and opened her legs a little bit.
I didn't say anything. I sat up from the couch, turned around and knelt down in front of her. She scooted herself closer to the edge of the couch, closer to me.
This time, she looked almost completely hairless. She must have shaved in the shower this morning before school. It was so perfectly smooth, it smelled so deliciously sweet. She lifted her legs up, spreading herself open before me. Her pussy opened up a little bit, but was still pretty compact, and so perfectly pink.