A/N: A continuation as requested by DarkxMoon21.
Percy stood outside the showers. It had been a hot day and he had had a particularly hard practice session, so he figured he needed a shower. He stood there, tapping his foot, waiting for whoever it was to get out. He had been waiting there for what seemed like half an hour, sweating from the summer heat. Finally, he decided that if whoever was in there didn't get out of there soon, he was going to break the door down. He counted to ten. "Ten...nine...eight...seven...six...five...four...three...two..."
Almost as if they could read Percy's mind, the door opened, revealing Thalia. She was wearing her black robe. It was partially hanging off her shoulder, as Percy could see her bra strap. Her leopard print bra strap. "Hey Percy."
"Hey Thalia," said Percy somewhat nervously, the memory of last night still in his head. "I'm just here to take a shower."
"Yeah, I kind of figured that," said Thalia. "This being the showers and all."
"Right," said Percy.
"Well they're free now." Thalia stepped aside to allow Percy to get in. She walked off.
"Bye." Percy turned around to her, but she had already left. Percy took off his shirt, got in the shower, and turned on the water. Surprisingly, the water was still warm. Thalia had somehow managed not to use up all the hot water. He began thinking of her. More specifically, her taking a shower. Percy thought about what it would be like to walk in on Thalia in the shower, rubbing soap all over her perfectly shaped breasts. Needless to say, this fantasy got Percy pretty hard. He grabbed his erection and began rubbing up and down the shaft. Of course, in his mind, Thalia was the one doing it. Her soft, delicate hands drove him wild. Soon he was sufficiently hard and she wrapped her legs around his waist. Percy pushed her up against the shower wall and began fucking her. She moaned sensuously. "You like that you filthy slut!"
"Oh yes!" Thalia screamed. "Give me more! I'm a dirty whore!"
"As you wish." Percy picked up the speed and soon she was screaming as loudly as she could. She scratched Percy back, which really got him going. He shoved his face into her breasts, which were bouncing up and down with each one of his thrusts. She leaned in and kissed Percy's forehead. He then felt her hand move from his back and cup his balls. Her fingers tickled them. This sent Percy heart racing. He felt like he would come at any moment. He decided he didn't have enough fun yet and decided to slow down. He pulled away from Thalia.
Thalia pouted. "Done already?"
"No," said Percy. "Just changing speeds."
"Changing speeds?" said Thalia.
"Yeah," said Percy. "Get on your knees."
Thalia did as she was told and after Percy had sometime to calm down a bit, he was fucking her from behind. He spanked her ass until it was red. Thalia screamed as he did this and Percy was extremely turned on. He leaned in a grabbed her breasts, playing with her nipples. Thalia giggled as she did this. They were nice and soft. Percy thought about last night, when he had imagined putting his erection in between her cleavage. This thought sent him over the edge and he came. Percy looked down at his hand and washed it off under the water. Outside he could hear someone knocking on the door.
"Hurry it up in there! Other people need to take a shower too." It was Clarisse, who almost seemed like she would breakdown the door. Percy sighed. He wasn't close to clean.