Maria wiped the sweat from her brow with her workout towel as she stepped down from the treadmill. She had just gotten done with a good workout and was going to cool down before showering and getting ready for the day. As she was stretching on the floor of the family room, going through her post-workout routine, she heard water turn on in the bathroom.
She glanced at her watch and muttered an expletive under her breath. She needed to get in the shower before her younger brother did, otherwise she risked being late to work, and she guessed her brother had beaten her to the only shower in the house.
She walked down the hall and checked Brian's bedroom, confirming he wasn't in there. That meant he most certainly was in the bathroom, since no one else was home at the moment. Entering her own bedroom, she considered what to do.
Maria had just finished her third year of college and was back home for the summer to work before classes started up again. Brian, behind her in school by three years, had just graduated high school and would be joining her at the same university in the fall. The siblings had been pretty close growing up - that's what you get when you live together in a small house - and got along pretty well now as adults.
Maria had always enjoyed teasing her brother with her body when she could. She would lean over in front of him to give him a good look at her cleavage, or parade around in her bra and panties as she dressed. Doing things like that never failed to give Brian a hard on. She always caught him looking.
"Fuck it," she said aloud to herself. Brian would just need to share the water with her. She was about to give him the peep show of his life.
Maria stripped off her sports bra, her perky C cups bouncing to their resting spot on her chest as she threw the soiled garment in her laundry hamper. Then it was off with her running socks, followed by stripping off her skin tight workout shorts.
Maria loved her full-figured body. She had a nice hourglass shape with wide hips that tapered into slender, athletic, legs. She sported a bush of dark pubic hair just above her pussy lips, but kept the actual area around her pussy clean shaven. Through her years of college, she found keeping that area bare led to more intense orgasms when men would go down on her or when they pounded their cocks into her. She ran her hand downward through her bush and slipped a finger through her moist slit, splitting her lips as she did so. Bringing the finger to her nose, she was happy that her pussy still smelled nice even after her workout. She rubbed her thumb and finger together to dissipate the wetness as she exited her bedroom.
Completely naked, Maria walked down the hall with a pep in her step and silently opened the door to the bathroom. It was a pretty traditional bathroom layout with the sink just to the right of the door, followed by the toilet, then a tub and shower combo at the end that spanned the width of the room. She had been quiet enough that Brian hadn't noticed her entry, but now she audibly closed the door, the latch making a clicking sound as the door closed.
"Maria? Who's there?" Brian asked from behind the shower curtain.
"Yeah, it's me, Bry. I need to shower right now, otherwise I'll be late for work. Mind if I join you?" she asked.
Brian's face appeared from behind the edge of the curtain. He was about to reply when his words got choked off in a surprise gasp as he took in his naked sister. Maria had stepped closer to the shower as she had been talking and was now a mere two feet from Brian's face.
"Uh, ah, Jesus," he said as he averted his eyes. "Maria, we can't shower together! What the hell!"
"Why not?" she prodded.
"Uhm, maybe because we're brother and sister!" he exclaimed. By now he had disappeared back behind the opaque shower curtain.
"So what? We've seen each other naked plenty of times!"
"That was when we were little and growing up! Jeez!"
As Brian was responding in protest, Maria kept moving toward the shower and pulled the curtain back to let herself in. Brian's mouth dropped as she actually stepped into the shower, the naked siblings coming face to face with one another. Brian's hands immediately went to cover his quickly growing erection.
Maria smirked at this. "It's okay, Bry. I'm fine with being naked in front of you. You should be, too. Being naked is natural! Plus, you've got a great bod," she complimented him. "And by the looks of it, a nice cock, too."
Brian was still too stunned to speak as Maria pulled the shower curtain closed behind her. "Mare," he started. His mouth was moving, but no words could come out. His eyes unconsciously moved down her body, taking in her perfectly round boobs, her shapely hips, and mess of dark pubic hair.
Maria giggled to herself. "Don't worry, Bry. I won't tell anyone that you got a raging hard on by seeing your sister naked," she said. "Now, let me get into the water."
Maria grabbed Brian's hip and moved him to the side so that she could slip by him and get under the water to rinse off. As she moved by him, she could feel his erection brush past her stomach. It sent a thrill down her spine and she could feel some heat beginning to pool in her crotch.
As she rinsed off in the water, she peeked at her naked brother standing before her. Brian had always been a tall, lanky guy. He had developed some muscle tone over the past year or so, but was still pretty skinny. He had the same olive-toned skin complexion that Maria had, albeit he did not work on his tan the way she did. His cock looked to be about five and a half inches in length, but he had a lot of girth to him. His cock and balls were surrounded by dark pubic hair, just like her vagina was.
Brian said in a defensive tone, "It's not like I can help getting hard, this thing has a mind of its own sometimes." Brian motioned toward his cock, standing at attention, which was pulsing with his heartbeat.
"Oh yeah? Even around your sister, huh? I thought you said we shouldn't do this because we're siblings," she prodded.
"I said we shouldn't shower. That has nothing to do with my boner. Like I said, it has a mind of its own. It sees nice boobs and a vagina and reacts."
