The sun was shining on a cool September day.  It was the second Saturday of the month, the wind was calm, and the house was nearly empty.  Lance was down the street at a friend's house, and Travis and Vera were out running errands.  Devin and Celia were at home by themselves, but they knew that their parents cousins were right next door, should anything happen.  This was not an uncommon occurrence since the younger twins turned ten years old, and Devin was used to it by now.  He sat on the couch in front of the television, watching his favorite shows from the past week on the DVR.  Celia, as far as Devin knew, was upstairs in her room, doing something or other.  All Devin cared about was that she wasn't interrupting his television time for once.

Devin giggled as the current episode came to a close.  As he began navigating the menu to start the next show, he heard a distinct moaning coming from above.  Devin's first thought was that Celia was simply masturbating, but as he listened he noticed the moans had a hint of frustration and desperation.  Curious, Devin turned off the television and walked slowly up the stairs, the sound of his sister growing louder with each step.  As he reached the top step, he could see Celia's door was halfway shut.  Members of his family didn't shut their doors while masturbating or having sex, so Devin's curiosity grew as he inched toward her door.

Slowly he pushed the door open, his head peaking in, and before him lay Celia, spread on her bed with one hand gripping her vagina and the other grasping the sheets.  The cloth underneath her hips were soaked with her fluids as she writhed, her toes clenching and body shaking.  She paused for a moment, licking her fingers as she panted, trying to catch her breath.  Devin had never seen her so intense.  "Why," Celia quietly spoke in between pants, "Why won't it go away?"

"Umm...Ce-Ce?  Are you okay?" Devin slowly walked in the room as Celia lifted her head.  "No, I-I can't get rid of this urge, Devin.  Help me, please." Celia groaned as her hand returned to her most private areas.  Devin took off his clothes and crawled onto the bed, in between Celia's legs.  Celia removed her hand as Devin's mouth took over.  He licked and sucked on her clit as he inserted two of his fingers into her moist tunnel.  "More, Dev," Celia begged.  Devin inserted a third finger, and started moving his hand with a piston-like motion.  After about a minute of his help, Celia grabbed Devin's hair, and pulled him toward her, startling the young boy.  She looked in his eyes and said, "It's not enough, Devin.  And I don't think you're big enough yet."  Celia pointed toward her closet.  "There, get the strap-on.  That should be big enough."

Stepping into the leg holes of the toy, Devin awkwardly pulled the strap-on around his hips, and adjusted the waistband to fit securely.  Climbing back onto the bed, he looked in Celia's eyes as she said, "Fuck me hard, Devvy."  Devin thrust his hips forward as the dildo penetrated Celia's opening, her head tilted back as she gasped.  Her little brother's hips moved with a furious pace as she rode the waves of pleasure.  She grabbed the sheets with both hands and wrapped her legs around Devin's body.  Her toes tightened and her legs pulled her brother in close.  Devin's pace quickened as he knew Celia was about to climax.

Suddenly a scream like he had never heard before came from his big sis underneath him, as Celia finally orgasmed, her body spasmed and her legs squeezed.  Devin slowed to a stop as he let Celia come down from what must have been the biggest peak ever.  As her body relaxed, her legs let go of her younger lover and Devin started to pull away.  But Celia wrapped her arms around Devin's neck and pulled him in for a kiss.  Their mouths opened and tongues met in a moment that seemed like an eternity.  After breaking the kiss, Celia looked in Devin's eyes, "Thank you so much.  I love you, Dev."  Devin smiled, "I love you too, Ce-Ce."