(Part 1 on r/sexstories)

We were home a day later when L. called me into the bedroom. She was standing near her dresser in a sports bra and underwear.

"Hey, I got an odd request from C."

My breath caught in my throat but I tried not to react. "Oh yeah?"

"She is looking for a new pair of yoga pants and she liked a few of mine, but she said she wants your opinion."

"About?"

"Which are your favorite?" she asked, holding up a few.

"Uh, the blue ones. For sure," I said, trying not to blush.

"I thought so," she said, turning away from me and bending forward to pull them on. Her ass bounced a few times as she tugged them fully up.

"What?" I said, realizing that she had said something.

"Grab my phone. Take a few pictures so she can see them."

I swiped her phone open and took a few pictures, first of her simply standing in them, and then she turned around, arched her back and looked at me over her shoulder. I tried to burn the image into my memory as I snapped a few more photos.

"Can I get a copy?"

She just laughed. "You'll have to just remember them."

Later that day, still preoccupied thinking about what C. was up to, I got a text with a link on my phone. I was at work, and the office is open concept, so I didn't dare open it.

"Go to the bathroom and watch," came the text from C. I didn't need much encouragement. I found the quietest bathroom and locked myself in a stall, popping in an earbud.

I hit play on the video. Still images of my wife in her yoga pants from this morning interspersed with similar looking women in TikTok videos, most wearing yoga pants ran across the screen. Then I heard my sister-in-law's voice over the videos.

"I think you want to make L. happy and you'll never guess what she wants. She wants you to cum fast for her. So as a punishment for you, for what you did, and to reward her, I'm going to make that happen. You want to make her happy, right? When I say 'clench,' I want you to clench your groin like you're cumming. You should feel tight at the base of your cock, and hold it for a second each time. Clench. Look at this picture of her, focus on how the fabric hugs her ass. Clench. She doesn't want you to hold back. She feels sexy when you cum fast. Clench. She wants to know you can't hold back if you try. Clench. Look at the small of her back, the way her sports bra looks painted on. Clench. Cumming quickly is a compliment. Don't hold back. Clench. She looks so good. She wants to know how out of control she can make you. Clench. Just let go. Just imagine how she looks without clothing on. Clench. By now, you should be pretty hard. Clench."

The photos shifted to video of L. that weekend, in a swimsuit, playing in the pool, obviously shot by C. She found angles to accentuate every curve. The video sometimes slowed down and repeated to show plenty of movement.

"Get ready to start pumping that cock. Clench. You'll only have 90 seconds. Clench. Do not disappoint her. Clench. Show her how sexy she is. Clench. How you are unable to hold back. Clench. Start pumping. Stroke that cock. Don't hold back. Look at her face. Her ass. Imagine her rubbing up against you. Cum for her."

Suddenly a pair of naked breasts flashed on the screen.

"Cum now!"

I was close, I could feel the point of no return approaching when two things happened. The voice said "Stop! Time is up," just as the door to the bathroom opened. My hand dropped from my cock, which bobbed in front of me, throbbing and about to spurt. I tried to still my breathing and waited while the other visitor to the restroom took care of his quick piss and handwashing.

"I almost made it," I texted C.

"Maybe next time," came the reply. "Do not watch that video again today. Or any stimulating material."

The rest of the day was a bit of a blur. Even without looking, I could remember things clearly enough that I lost count of the number of random erections I had to deal with.

By the time I get home, I was so horny. I try to get through the evening without letting on, but L. notices my lingering stares. Luckily she just rolls her eyes and takes it in stride.

By the time we are getting ready for bed, she is actively teasing me, rubbing her hips against me as we brush our teeth. Giving my cock a squeeze through my pajamas, but pretending she isn't paying attention.

I practically jump her as we get into bed. She asks what got me going today as we're making out but I don't answer.

"Was it taking those pictures this morning?" She asks. "I see," she says as she feels my cock throb with her hand wrapped around it.

I work my way down her body, propping her hips up with a pillow so I can get the angle she likes. I start with my tongue soft and broad, teasing more outside and near her labia, bust steadily working inward. Before long I've slide my first two fingers inside, facing up to find her G spot as my tongue continues to trace up her labia, sliding across her clit a the top of each stroke. I feel her fingers twine through my hair.

"So you have a thing for those yoga pants?" she asks.

I just nod.

"I'll have to wear them more often."

I continue with my tongue, but with a firmer, more concentrated pressure.

"Have you ever jerked off imagining me in them?"

Nod.

"Do you imagine me grinding my ass against your hard cock in them?"

Nod.

She fell quiet as her hips began to push against me. She used her hands to push me in rhythm against her. I kept pressure and tempo for a few more seconds. The first sign was a clench around my fingers and a catch in her breathing, and then her body convulsed against me.

"Whew!" she breathed out.

I climbed up her, and slid inside.

"Oh my god," I said. "You feel amazing."

"Different than normal?" I felt her legs wrap around me, pulling me deeper inside her.

"I don't kno--oow," I say.

"Have you been thinking about my ass in yoga pants all day?" she breathed in my ear.

That was all it took. Just a minute in and I was cumming. Hard.

"Oh wow, that was fast," she said, with a big smile. "I guess I know how to get you going next time."

I stayed inside of her and we made out for a while longer before cleaning up and turning out the lights.

I lay awake for a little while, wondering if I was enjoying this or not, but falling asleep before I decided.

The next morning I woke up and texted C., filling her in on last night's experience.

"And, did she enjoy it?"

"She seemed to."

"Is she still asleep?"

"Yes."

"Good. Get up, go to the bathroom and watch the video and see if you can cum fast enough this time."

"Okay," I answered, but was unsure if I could cum quickly after sex just a few hours before.

I padded into the guest bathroom, lock the door, and popped in both earbuds this time, as I am the only early riser in the family.

The same images scrolled across the screen: L. in yoga pants interspersed with TikTok yoga pants videos. My sister-in-law's voice, encouraging me to clench. Before long, my cock is throbbing hard in my boxers so I fish it out and watch it bounce in time with the clenching. By the time the video tells me to start stroking, I can tell I'm getting close. Even though I had 90 seconds, by the time the bare breasts flashed on the screen, I was ready. I had even been holding back a bit to cum when they were dropped out of a tight sports bra. I came hard and fast, surprising myself. The video continued to play and I noticed in the background of the topless video that it was filmed in my sister-in-law's bathroom. The revelation gave me a little excited jolt, I felt my cock clench, and a little more cum spurted out. I wasn't sure if it was voluntary.

"What are you doing to me?" I texted C.

"Success? Good. I'll send you another video for tomorrow, but until then, no touching."