The Silent Air Mattress Part 6

When we got back to the house, we opened the door as quietly as we could, peeking in. Our clothes had gotten wet all over again and there hadn't been much point in putting them back on so we were still down to our underwear. After seeing that no-one was inside, we snuck in. We began hurriedly tip-toeing in when suddenly I hear a door creaking open. We scattered then, Isabella dashing for her room while I ducked inside the nearest bathroom. After closing the door, I tried to lock it but the lock seemed broken. Hurriedly I stripped off my clothes and stepped into the shower, turning it on. When the water warmed it felt really nice, and I sighed in relief and relaxation. A few moments later however my relaxation ended in alarm as the shower curtain was drawn aside to reveal Cassie, completely nude.

Instinctively I tried to cover myself, but she merely stepped behind me and wrapped her arms around me and began playing with both my nipples, pressing her body tight against mine. This made me groan from the pleasure and I uncovered myself, pressing my palms against the shower wall to steady myself.

"Oooh what a bad boy you've been! I saw you little sneaky rats. What have you been doing with Isabella half nude in the rain?"

I genuinely had no idea how to give a good answer to that.

"I...um...we...were looking for birds...and uh..."

"Uh huh. Very convincing," she cut in.

As she said this, she moved one hand from my nipple and traced it down my front until she reached my dick, at which point she traced the top of the shaft with her fingertips before forming a circle around the head and moving it down, beginning to stroke my flaccid dick. Immediately I began to harden, and she cooed as I reached full mast.

"At least your friend here gives honest responses."

I moaned again, and what began as gentle, slow strokes evolved into firm, rapid pumping. Pressed between her tits on my back and the wall in front of me, I felt like her pet which she pumped and milked as she wished. Delirious from the heat, I began to recall times when Cassie visited me in the loft, when I fucked Sarah, and just now when I received a lap dance from Isabella. My body went slack other than my arms and legs working to keep me upright, and I lost all reason and became a dumb animal for Cassie to milk. I heard myself let out a low, unintelligent groan.

In response Cassie whispered into my ear in a bewitching lilt,

"Mmm what an obedient little beastie! Maybe you can be domesticated yet."

Moving around now to my front, she placed one hand on my balls, the other resumed stroking my shaft, and she leaned in and kissed me forcefully, her tongue penetrating my lips. She pushed me back against the wall, and disentangling her mouth from mine she moved her lips to my nipple, licking, sucking and nibbling it as my back remained pressed to the wall. My hands went to the back of her head and her shoulder as I instinctively pulled her against me. I groaned again. Human language was beyond me at this point.

Pulling back from me, she lightly squeezed and felt my balls and said,

"My, they're rather full and raring to blow! Don't tell me Isabella didn't finish you off?"

Looking into her eyes feeling like a captured beast, I shook my head hurriedly.

Getting onto her knees and tilting her head all the way up to look at me, Cassie grabbed my cock and plopped it onto her face, saying,

"What an irresponsible girl! Then again, not like I'm any better."

Moving her face down my shaft, she took one of my balls into her mouth and stroked my shaft. After moving to my other nut and doing the same to it, she grabbed my butt cheeks with both hands and began pulling me forward and back, encouraging me to fuck the surface of her gorgeous face. Reduced to a senseless animal, I complied with great zeal, grabbing her head with one hand and using my other hand to hold my cock against her, dragging the bottom of my shaft against her beautiful face to generate as much friction as I could. I could see her devilish smile beneath my thrusts, and she winked at me as I held eye contact with her before pecking my shaft with a kiss. I felt my heart fill with love and my balls tighten. This caused me to thrust with even greater zeal, and my cock slipped off her face. Without a moment's hesitation, Cassie pushed me against the wall by my abs and engulfed my cock with her mouth down to the hilt. She began furiously blowing me, going up and down my cock from tip to hilt. Beyond her head I could see the arch of her back ending in her perfect alabaster ass. I grabbed her head and began skull-fucking her in earnest, as she grabbed my balls and began regularly squeezing them with one hand as her other hand went between her legs and rapidly frigged her pussy. I was going insane, and I could feel my balls tightening more and more, until...

Cassie squeezed my balls, harder than she had before, but not hard enough to create substantial pain. I gasped. She withdrew her mouth from my cock, and then stood up, continuing to play with my balls and lightly squeeze them as she moved my cock so that it was pushed up against her stomach and she pushed herself tight against me. She began to rub herself up and down the underside of my shaft, and in return I began to thrust forward slightly as well. I groaned in a whine of frustration.

"I know, I know..." she cooed sympathetically in an expression of mock pity. "I'm so hard on you, aren't I? But think about how hard you are on me," she giggled.

"How about this," she asked with an impish grin. "I'll give you a choice. I can leave right now, and you can jerk off or finish your shower or whatever, or I can let you fuck my ass cheeks and thighs? Of course, if you do jerk off you obviously lose the bet, but if you choose to fuck my thighs you're still not allowed to cum, and if you do cum you ALSO lose the bet. Arguably it's still a lose-lose for you anyway, but I wanted to throw you a bone since you've been so eager to give me yours."

Some part of me felt like this was deeply unjust, and that it was a gross miscarriage of what the bet was supposed to be about, but in my current state of unreasoning, monstrous desire I could not focus on these feelings. Instead I simply held her tighter and continued to thrust against her as I grumbled,

"I want...to fuck...you."

Cassie gasped in a playful whine and said,

"Ooh I love a little beastie who's direct with what he wants. I was hoping you'd say that, but I hope you don't come to regret your decision."

Escaping from my grasp, she spun and around and placed her palms against the wall, pushing her perfectly shaped round white ass out at me and curving her back at a sharp angle as she said,

"Fuck my ass cheeks."

Moving up behind her and sliding my dick in between her cheeks, I began to thrust up between them, grabbing her waist and pushing my dick down for pressure. She thrusted back into me and clenched her cheeks before laughing and giggling at my zeal. I was frustrated at her laughing at me and I was frustrated at not cumming, and that only made me rut against her more intently. Eventually, however, she shook her ass at me until I had to let go, and she used one hand to frig her pussy as she said,

"Now fuck my thighs but don't cum."

Taking my cock again I pushed it between her thighs. Reaching around I grasped her stomach with one hand while my other hand went to one of her tits. I began pulling and pleasuring both as much as I could in my haze, mostly just wanting to feel as much of her as I could. My body was draped over hers completely, and my chest rested on her back while my nose was buried in her hair, allowing me to become intoxicated by her sweet vanilla scent. Both of her hands returned to steadying herself on the wall, and she clenched her thighs together and remained completely still, giving me a tight sleeve to fuck. It was so hot in this shower, but nowhere was hotter than the heat emanating from her pussy grinding the top of my cock. I could feel its siren call and I wanted so badly to pull back and bury myself in it....

I moved my hands all over her, gripping her everywhere, grasping both her tits, her waist, her hips, her stomach, her thighs, everything as I pushed her harder and harder against the wall while I grunted like a caveman and she squealed and whined her approval.

I just...I needed to cum. I needed to cum. I needed to cum. I needed to cum with her body.

These foggy half-baked thoughts filled my empty head more and more as I rutted with greater and greater need, but as my balls began to tighten once more in warning another thought emerged beneath all of those. It was a vague thought, a hazy "no." Something deep within me was telling me that no matter what, I must not cum. It was a stupid thought, and one I was keen to ignore, but suddenly it gripped me with greater force than all the others and I found myself agreeing with this stupid thought. Just as I was sure I was about to cum, I yanked myself backwards, turning and planting myself against the nearest wall to keep myself from falling over. I panted and moaned my frustration, and more pre-cum than usual came out as a herald of the orgasm that I was meant to have had.

Cassie pushed herself off the wall and turned to look at me, biting her lip in both disappointment and intrigue.

"Well, would you look at that!" She said. "The chimp has some self control after all. I'm honestly impressed. As your reward, I will torment you no longer and I will leave you to your own devices."

With that, Cassie stepped out of the shower, closed the curtain, and began drying herself off and putting her clothes back on, leaving me in the shower to languish in frustration at my own stupidity.