Riker was struggling at his and Izzy's next track practice. He'd always had a tendency to check out butts as he and the girls on the team did their running drills, but it was so much worse now. Izzy was definitely very deliberately staying in front of him as often as possible, just so he'd get a boner watching her ass. It worked as well as she ever could have hoped for.
There was that, on top of the usual mild perving Riker did on the other members of the team, and specifically Celeste and Aurora, who he'd now seen naked, and who had in fact teamed up to blow him once. That one time was apparently all it took to make them both more fascinating to him.
"MacIsaac!"
Riker was startled out of his ass-based hypnotic trance by Coach Watson. He and Izzy, both hearing their last name, jogged off the track over to her.
"Which one?" Izzy asked.
"Both of you, as it happens," Coach Watson said, glancing up from her clipboard. "Izzy, you're running slow today, don't think I haven't noticed."
"Sorry, Coach."
"Give me a couple good laps before you hit the showers."
Izzy nodded. "Ok."
"Riker... you're running slow too, and I'm sure everyone has figured out why by now."
Riker shuffled his feet. "Sorry, Coach."
"I don't need that sort of problem here. The girls like having you around, and I don't mind them all trying to impress you. It brings out better performances. I don't even care which one of them you have a thing for. Surely you know how to deal with those... feelings."
"You mean his boner?" Izzy asked innocently.
"Make that three good laps," Coach Watson said.
"I just said--"
"I'll make it four, don't think I won't."
"What's going on?" Celeste asked. She and Aurora has wandered over, both clearly smirking at Riker standing there embarrassed with his tented shorts.
"None of your business," Coach Watson said.
"If Riker needs a hand, we're available," Aurora said.
"Team spirit and all," Celeste agreed.
"I'm sure he can manage," Coach Watson said.
"Manage what?" Izzy asked, still all innocence. "His bo--"
"Four laps, all of you. Now!"
Riker, Izzy, Celeste, and Aurora all set off, and were the last ones out there by the time they did another four circuits. Even their coach hadn't waited around for them, but no one had suggested skipping out on their assigned laps.
All three girls, without apparently having to discuss it, made sure to run just in front of Riker the whole time, giving him a triple whammy of booty to stare at, and adding to his discomforting erection. It was really quite painful by now, since Riker's running shorts weren't made for it in the first place, and his cock had been restrained for an unpleasantly long time by that point.
The follow up was quite good though. Riker hit the boys' locker room, and all three girls followed, after first grabbing their stuff from their lockers.
Riker was just sighing in relief as he peeled off his shorts when his sister and the two other girls barged in. He wasn't even overly surprised, nor did he mind being caught with his pants down. Once a girl had sucked his cock, he felt there wasn't much point in shame. Unbeknownst to Celeste and Aurora, but knownst to the twins, all three girls present had in fact blown him at this point.
"Dang, you really have it bad," Celeste said with a low whistle as she eyed Riker's cock.
"Too much perving out there will do it," Aurora said.
"Lucky you've got good friends to help you out."
"Mmhm. And lucky your sister doesn't mind."
Izzy was efficiently taking off her clothes, and pretending not to pay any attention to the girls teasing Riker. "Why would I mind?"
"Oh, you know," Aurora said. "You might question our intentions with your brother."
"What's to question? You're all horny little things. You're perfect for each other."
Celeste snorted. "Yeah. Just us three. I'm sure you're not horny at all."
Izzy dropped her panties and stood rather calm and stoic for being totally nude. "What's that supposed to mean?"
"Are you implying you're not going to rub yourself silly if we play with Riker a little?" Celeste asked.
"I might," Izzy admitted.
"Sounds like you're a horny little thing too then."
"Fine. Maybe."
"Too bad he's your brother," Aurora said. "Or we could all share."
Izzy made a strangled noise that luckily only Riker recognized for what it was. "Yeah, too bad."
Riker and Izzy started showering together, having taken their clothes off fastest. They only managed to share a long, knowing look before Celeste and Aurora joined them.
The girls moved seductively toward Riker, in the sense that any naked girl headed straight for him was seductive. Particularly when he was so horny already.
"Want some help with that boner?" Celeste asked.
"Looks like you do," Aurora said.
Riker's eyes only barely flickered over toward Izzy who was watching the brazen display with a crooked smirk.
"That would be nice of you," he managed with only a slight squeak to his voice.
"It would, wouldn't it?" Aurora said, brushing her fingers over the head of his cock and making him gasp at the initial intimate touch.
"We're very nice people," Celeste said, caressing Riker's cock with her full palm.
Riker leaned back against the wall, water cascading down his body. Celeste and Aurora knelt in front of him, their respective red and blue hair getting wet as they shared some of the spray, and more importantly shared his cock.
The girls kissed Riker up and down his shaft, flicking their gazes upward often to see what effect it was having. Riker moaned and involuntarily thrust his hips a few times. His cock twitched when they found a few particularly sensitive spots, and they kissed him some more just to see it happen again.
Izzy rubbed her pussy, already feeding off her brother's pleasure. She would have much preferred being the one to suck him off, but this was good too. Especially now that she could feel comfortable knowing Riker's cock was hers to suck any time she wanted it.
Aurora took Riker in her mouth while Celeste sucked on his balls. They switched off every now and then, always sharing and taking turns.
Riker groaned and closed his eyes. Silently, he reached out one hand toward his sister. Izzy bit her lip, looked at Celeste and Aurora who weren't paying her the slightest attention, then moved closer so she could hold her twin's hand while he got his double blowjob.
Riker opened his eyes again and smiled at Izzy. Celeste, currently sucking on his balls and looking upward, did notice them holding hands, but didn't say anything about it. She had a thoughtful look about her, though.
After taking another turn sucking Riker's cock, when Celeste swapped off again she shifted her position slightly, facing Izzy more. She ran a hand up Izzy's inner thigh and gently pushed Izzy's hand away from rubbing her wet pussy. Making full eye contact, Celeste moved her face closer. Izzy just nodded and leaned back to let Celeste kiss her pussy.
Riker squeezed Izzy's hand tighter, reassuringly, as Izzy got her pussy kissed and licked by their friend.
Aurora's blue hair bobbed back and forth while she did her best to deep-throat Riker, and Celeste's red hair got mussed as Izzy patted it and tangled her fingers in it, moaning and encouraging more licking of her clit. None of them had particularly expected this development, but were all quite happy to roll with it.
Aurora slipped her hand into Celeste's as they worked on the twins together. It was quite a cute gesture amidst the rest of the very horny activity.
"You two aren't a couple, are you?" Izzy asked.
"Don't be silly," Celeste said.
"Just best friends," Aurora agreed, shoving her mouth back onto Riker's shaft after speaking.
"Best friends who eat each other's pussies?" Riker asked.
Both kneeling girls went crimson.