Rusty Pipes kept kissing me harshly as my member was still hardening and inside her. Then, she bucked her hips yet again.

Sugarcoat tried to solve the problem, but had to give up after so much pressure was put into it. Tick-Tock smirked, pulling her about-face to the direction of me and Rusty Pipes fucking.

"Is... that the best... you could do...?" Sugarcoat slightly insulted Rusty, which almost made Tick-Tock tick.

"Is that so?" Rusty heard that comment, but shook it off as she held my hands and placed them onto her tits, as closer as she could. She stopped after several seconds and stood up before turning to grab my head and bury my face right into her ass. In the process, she bent over to give me a stripper-like tease and stroke my member.

Rusty giggled deviously, turning her head. "Mmmmm... never thought a real tongue like yours can really clean my pretty pussy..."

Tick-Tock herself was aroused by the sight of it and had to get me to do the same as well, but before she could, she turned to Sugarcoat and tied her up to a nearby wall post. "Too had you couldn't solve my problem. Guess you'll have no choice to watch a good show..."

After I was done eating out of Rusty, I turned to Sugarcoat and saw her tied up before turning to those two dirty mares. What'd you do to her?"

"Don't get all soft on me, fucking stud." Tick-Tock huffed while pushing her ass close my face. "She shouldn't be any of your concern, especially with your cock still being hard."

I had no choice but to just give Tick-Tock a good tongue scrub, all while getting my dick stroked by Rusty, who looked up at her and got up with lust-heavy face. The two mares have been receiving too much, and enjoying it every minute. But after seeing Sugarcoat tied down like that, I couldn't let it slide. As soon as the mares started to kiss heavily with tongue, I snuck a finger into Rusty's pussy while keeping my tongue rolling around Tick-Tock's. Oddly enough, I surprisingly touched both of their g-spots at the same time, and they shuddered loudly.

"...Holy Shit..." Tick-Tock breathed heavily in bliss. "In record time, too!..."

Rusty couldn't say a word and gave a slap to her partner's ass, shoving her slightly aside to give me a sloppy kiss to my lips.

"Be sure to save some more for us, if your cheap closet freak marefriend doesn't mind..." Rusty licked her lips at me before walking out, with Tick-Tock following behind. They celebrated their session with more making out, giggling and humming with passion. I breathed heavily before turning to Sugarcoat, who was still tied up and in heat herself. I had to use my strength to go and carry her.

***

As soon as we made it to my dorm room, I headed for the bathroom and gently sent her to the bathtub. After that, I had to cut the ropes off and strip off her clothes until she was in her bra and panties, letting her body loose. It was only fitting that I had to strip off mine as well, but only leave my boxers on. Once I turned on the cold water, Sugarcoat woke up, seeing me at her side.

...Mmm... where are... these... bit-ches...?" she uttered, waking up.

"They walked out. I handled them off." I answered before she wrapped her arms around me and held me tight. We were both dampened and naked, but couldn't care as we headed for the bed.

"Thanks..." Sugarcoat turned to me. I nodded, stroking her cheek before hearing her purr sweetly. We looked into each other's eyes for a while, then blinked and turned to the door. It was then she asked me about how to even solve that puzzle from class.

I began to explain how I solved the problem she mentioned. "So, here's how the problem goes: Always solve the Parentheses first. If not, then solves the M, D, A, or S.
Always solve multiples, or additions first. The system get complicated at first, but don't worry."

"What about those?" Sugarcoat pointed to the parentheses.

"Well, they say you do those problems first before anything else. But for now, we should work with the MDAS."

I assisted Sugarcoat through the Order of Operations, step by step. She was still having a little when looking at the problems altogether. But, I quickly soothed her with extra advice - just set everything aside, and solve one small problem, then go to another. She nodded and did it all. Sure enough, she was calm, not even letting anything faze her. Oddly enough, she started asking me to challenge her with another, so I thought of some different numbers to throw at her. It seemed clear that she has gotten the system in her head for a while, along with some confidence.

Suddenly, I gave her hip a little soft stroke while I was still teaching her, and she didn't show any resistance. But, she kept my hand still with hers and bit her lip.

After several moments of teaching, she decided to do a little sexy pose of her body in front of me. I caught an eyeful of her curves, and couldn't bother saying another word.

"Is this what you were trying to get get your hands on when I paused out?" Sugarcoat teased, moving her hips in tempting motions. Her hands were in the air until they descended, slithering her smooth skin. I got a good eyeful of her, sneaking a little grab of her ass and lightly pulling her close to me with impatience. She gave off a cute smile before stripping off her panties while she got her bra off.

Once she set the work and bikini aside, she wrapped her arms around my neck and gave me a deep kiss to the lips. I caved in and followed, not even being sorry about it at all because it made her look so cute to jump on me.

Her soft and waiting marehood rubbed my bulge until I was unable to contain my dick any longer. Then again, neither would she want it to. In fact, she set herself up swiftly and pulled my member out of my boxers. And in no time at all, she gave my dick a good suck.

"Fuck, that's good!" I groaned with my eyes rolling backwards. Her tongue did nothing but smooth transitions from head to shaft, rolling halfway. My hardened dick twitched slightly, but she still kept it rolling in her mouth.

"Now, I'll have to show these bitches how I fuck my stud properly..." she wasted no time mounting on top of me, leading my cock into her waiting entrance. Of course, I had to oblige by grabbing her hips and bounce her moderately. Her orgasmic face was cute, but her moans were even adorable. As soon as my tool smoothly rested in her pussy, I took my time thrusting into her to get her stress out before she could.

"...Guess that mare... you... fucked wasn't... worth... it..." Sugarcoat was surprised to see that I was banging her stress away. Admittedly, she expected me to do it in the bathtub, but doing it after study was ok in her book. After thrusting hard, we both groaned loudly, with our heads pressed onto each other, and our mouths touching deeply.

Most of my seed blasted into her mouth, and more of it came slowly. She felt the impact of it, and squeaked lightly with her eyes closed. After swallowing it whole, she continued sucking my member like crazy. Oddly enough, I lied down and did nothing until I saw her head snuggling onto my chest.

"I'd say that I needed that cock shoved in my mouth. Sorry if I neglected you of doing anything." Sugarcoat apologized, rubbing by chest in soft circles. Little did we know that a curvy light green earth mare with yellow and red hair pleasured herself while listening to us. Upset, she cursed while her marehood glistened with wetness, licking her own sweet juices with a lusting and growling face.

"What you should realize is your marefriend isn't too bright in the mathematics department. You've been fucking mares left and right, and none of us here would ever have that chance..." she boasted to herself, filling herself with lust and anger. Regardless, Sugarcoat and I were sound asleep, not even bothering ourselves to wake up.

"I'll show you, and your marefriend that you've been missing a hot piece of ass like me..." the green light mare promised, taking a little juice from her marehood and tasting it with a lick of her lips.

"That Diamond Tiara ain't a bitch no more, huh baby?"... I expect to see some proof about you... what's it gonna take to get in your little "stable"?"