Heavy Rain

I wake up to hearing thunderstorms. Looking outside, it was raining heavily, with strong winds and floods! "Sheesh, when did this storm happen?," I say as I get out of bed. I see that I'm naked with my 20 inch boner. "Phew. The 42 inches was a dream. If I had gotten random boners during class, it would have been hard to hide.," I think to myself.

I then gasp, "Oh shit, how am I gonna get to school?!," I ask myself in shock. I rush out of Riley's bedroom, only to run into a naked Riley's chest.

Riley embraced me tightly, knowingly or unknowingly squeezing my shaft between our bodies, "Hey, relax you cum stud. Because of the weather, school's out until next Monday. And our parents won't be able to get back home until Monday either. So, we have the house to ourselves for a while longer, and we don't have to worry about school until then.," Riley told me.

I let out a breath of relief as I returned the hug. After a minute of the naked embrace, we separated. "Now, go freshen up. I made breakfast again, and I meant what I said about making up for lost time.," Riley told me as she walked back to the kitchen. Excited to have more fun with her, I decided to leave my erection be, and freshened up.

Afterwards, I went to the dining table, where a naked Riley was setting the food down. After sitting down, my erect cock was still in the way. I had to push it to the side to continue eating. Riley chuckled at the sight.

After eating and washing the dishes, Riley turned me around and kissed me while she grabbed my erect cock with both hands. Then the kiss stopped, "My room. Now.," she said, tugging me by my cock.

After a minute of tugging, Riley picked me up and tossed me on her bed, "Whoa! Calm down, sis!," I say, surprised at her ferocity. She hopped on bed and straddled me, grabbing my arms and kissed me again, initiating a makeout. After a minute of making out, we separated. I then felt that my arms were stuck. Looking at my arms, I was handcuffed to the bed frame!

"Riley, what the heck!," I say in a panic, but she grabbed my boobs, which seemed to have gotten bigger, and started kneading them, making anything I try to say come out as moans.

"Alright, Anna. It is time for the main event. I have always wanted to do this ever since I saw your cock.," Riley said as she started sliding her pussy all the way up my length. "Riley, this is my first time. Are you sure?," I asked with concern. And she replied, "I have never been more certain of anything. Now shut up and fuck me."

After that response, she slowly began her descent, with me entering her pussy. This is the first time I am experiencing this and the pleasure was insane. I was moaning loudly as she slowly descended. She eventually had my whole cock inside her somehow, making her moan loudly. This was still new to me so I was already close to cumming from her inner walls squeezing my length.

"Riley, fuck! I'm about to cum already!," I warned her. But that made her start moving her hips more. After another minute, I came inside her, and both of us moaned loudly in pleasure. But Riley did not stop moving her hips, prolonging my climax.

"Riley, you will get pregnant! Fuck, I'm cumming AGAIN!," I try to warn as I was hit with another climax, while Riley hit her own climax. We were both a moaning mess from our orgasms, but that did not stop her from moving her hips. She slowed down her humping and spoke, "Relax, I took a premium birth control pill, so you can pump as much cum as you want into me until next Monday. You'll not get me pregnant, unfortunately.," she said to me. Wait, what did she mean by 'Unfortunately'?

She then embraced me, smothering me against her lovely bosom as she fucked me. She then said, "We're gonna be at this for a while, little sis."

-2 hours of multiple messy orgasm later-

Riley and I climax one more time. I have lost count of how many times she or I came, but I do know that I am spent. Riley gets off of my cock. Looking at Riley now, I can see her belly bulge from all the cum I have put into her. I tried getting up but I remembered that I am handcuffed. I also noticed that my legs were handcuffed to the corners of the bed, spreading them apart. When the hell did she cuff my legs?

"I'm going to do some chores before I get to making lunch. You can lie down there and bathe yourself in cum.," Riley said while tampering with her tablet. I saw her look under her bed and started grabbing stuff. I replied, "Come on, big sis, can't you let me go? I'm not hard anymore and I'm certain you milked my balls of all the cum they had.," I say while referring to my flaccid shrinking cock.

Riley stood back up, "Oh really? Let's test that. If you only release a little cum from this climax, I'll let you go and have you help around the house. If you release a lot of cum, we're keeping you tied up to leave you defenseless against the cum bath. But this time, I will be gagging and blindfolding you. You up for the bet?"