It was a normal day for Phoebe and Max. School had ended for the summer and no real crime had been committed in a while. They had been given the month off to relax and recharge before they had to get back to work. Weirdly enough, they had become closer during the time off of school and superhero work. They had bonded in ways that baffled their parents. They had decided to give them a few nights away from the family so they could have some quiet time before they had to work. Barb and Hank took Chloe, Billy, and Nora out for a nice day at the waterpark, leaving Max and Phoebe all alone for the day. Max had been looking forward to this as he had a secret plan for his day with Phoebe.
As it happened, Phoebe was in the shower getting ready for the day. She was in the middle of showering when she saw Max watching her out of the corner of her eye. She didn't know what to say, she hadn't alerted him yet as he still stood there watching. She had left the door open by accident, thinking he was still asleep. Max had woken up and wanted to get ready and when he saw Phoebe showering he couldn't help but watch. He started to grab his cock as he felt it get hard in his pants. He watched Phoebe showering and started jerking off. Phoebe was a typical teenage girl, she had a pretty nice ass that all the guys tended to like. However her tits were pretty big and they were what drew people, especially Max to her. He really liked her ass, but he loved seeing her tits swing around in the shower as she cleaned them.
Phoebe, seeing Max's cock, started to get turned on herself. Max had a huge cock. It was bigger than anything she had ever seen, and she knew that she wanted it, but first he had to earn it. She wanted to tease him and decided to start playing with herself. She couldn't help but feel turned on by her brother being into her. She turned slightly to where he could definitely see her, but not that she was watching him as well. Phoebe licked her fingers seductively and then reached down to start playing with her pussy. She ran two fingers around before slowly putting them inside her. She started getting faster and faster as she started getting three and then four fingers inside before moaning in delight. She was trying her best to put on a show for Max and wanted to catch him as he was cumming. Max was desperately trying not to cum as hard as he could. He was certain Phoebe wasn't aware he was there and kept jerking himself off. He was nearing completion when Phoebe yelled at him startling him, but he came anyway. He came all over her clothes and stood there agape.
"Max, what the fuck? Why are you standing there when you could have joined me?"
"What?" Max replied "You want me to come and join you in the shower?"
"Yeah, I've noticed you staring at me for the last 15 minutes." Phoebe replied. "You never told me how big that cock of yours was."
"You never asked." Max replied back, taken aback at how much Phoebe was into him.
"Well, why don't I towel off and we can go down to your lair and see how big that cock actually is." Phoebe offered seductively.
"Well hurry up then." Max chimed back.
He grabbed her hand and took her back to his room. Phoebe took a seat on Max's bed and stared at him as he took his clothes off. Phoebe had wanted this for so long that she wasn't sure how she would feel when the moment actually happened. She was so ready for him his bed was soaked where she was sitting. Max now unclothed, approached Phoebe and started to kiss her passionately. She returned the kiss and reached for his cock with her hands. Max used his hands to grasp her breasts. He fondled her nipples and twisted them ever so slightly. Moans escaped from each other's mouths only for them to be outdone by the other.
Phoebe broke the kiss and started for Max's cock. She was amazed at the size that Max was and a little upset that he had never shared it with her before. She had only imagined how big it was when she thought of him in the shower, and now it was even bigger. She spit on the tip before going down and licking his balls. She had both in her mouth as Max started eating her out. She was so wet that his fingers glided in and out of her with no friction. She was loving that her brother was fingering her as she had his balls in her mouth. She took them out and slowly liked her tongue up his shaft. She wanted to taste each and every inch of his cock. She then took the tip of his cock in her mouth and began to take it all to the back of her throat. It made her gag as there was so much in her mouth and throat. She didn't mind though. A cock that big was worth a little pain.
Max had moved from fingering her to eating her out. The juices that came out of her were flowing down his face. He loved each and every lick more than the last. He started taking his fingers and playing with her ass. Phoebe kept moaning in delight whenever he put his fingers on her asshole. She desperately wanted him to put his fingers inside her ass.
"Just put your fingers in already." Phoebe gasped as she told Max between bobs.
Max gleefully listened and started putting his fingers in Phoebe's ass, one at a time until he had his whole fist in her. Each pump of his arm made Phoebe moan even more. She couldn't believe that her own brother was fisting her ass. She loved it and became even more turned on.
Max's cock glistened from a mix of precum and spit from Phoebe's mouth. She had been going on and on for a while. She wanted him to fuck her raw.
"Max, take your hand out of my ass, it's time to fuck. You're gonna fuck me as hard as you want. Make me your little bitch."
Max positioned her to where she was on her stomach and he lined up his cock with her pussy and began fucking her. He fucked her as hard and as fast as he could. Each pump made her ass jiggle. Phoebe was enjoying every second and every inch of it. She wanted him to make her unable to walk from this.
"Max, put your fingers back in my ass. It's gonna make me cum so hard."
Max put his whole fist back in. He kept fucking her as hard as he could. Phoebe was screaming in delight. She was so close and while she did want to cum, she didn't want to end this experience yet. She was trying so hard not to cum but couldn't hold it back anymore.
"MAX, I'M CU–UMMING!" Phoebe yelled as she came everywhere. She squirted all over his cock and his bed. A fountain of cum came out of her and Phoebe just kept cumming and cumming. Eventually she finished and Max pulled out and started jerking off as he was near completion. Phoebe reached over and started jerking him off. She took her mouth and began blowing him.
"I'm about to cum Phoebe." Max moaned.
"Cum in my mouth Max." Phoebe said as she gagged on his cock.
Max came all inside her mouth. Even though Phoebe tried to keep it all in her mouth, there was so much that it dripped out of her mouth and down her chin onto her chest. Phoebe picked the rest of it up and placed it in her mouth and swallowed it all. Not before showing Max all the cum in her mouth.
Both siblings collapsed on the soaked bed and embraced each other. Max held Phoebe as each tried to catch their breath. They had worn each other out so much that they couldn't do anything but lay there in each other's arms. Once they had gotten their breath back they were amazed at the scene that was in front of them.
"Did we just…?" Phoebe asked.
"Yeah, we totally did. You got every inch of my bed covered in cum." Max replied.
"Wow," Phoebe responded. "You really made me cum that hard."
"What are we gonna do now Phoebe?" Max asked.
"Well, I'm gonna clean up and take another shower and then we are gonna fuck untill Mom and Dad get home. I want to be exhausted by that cock by the end of the day." Phoebe replied.
"I mean we could just lay here for a long time. I like seeing your naked body covered in cum." Max replied.
"Your cum is very tasty," Phoebe giggled."How about we take a nap together and then fuck again?"
"Sounds good to me." Max responded.
As they drifted off to sleep, Phoebe reached one of her hands to Max's cock and played with his balls and Max grabbed her breasts and lightly twisted each nipple. Together they slept for a couple hours.