It was a moist summer’s night and
the air conditioner was broken. Jack was asleep in his room with his windows
wide open. The sound of a train across the river woke him up. The first thing
he noticed was how humid it was in his room. The sweat was running off his
face. His balls were sticking to his legs. He got up and took off his boxers
and stood in front of the fan he had sitting on his night stand. The breeze
felt good and it dried the sweat off. He stood there for a moment and began to
doze off. He slowly started to get an erection. The head of his penis hit the
cage around the fan. He snapped out of it and began to put his boxers on.

Across the hall and in Jack’s
sister’s room lies Sarah. Sarah was obviously hot and sweaty too because she
was spread out on top of her covers with her oversized T-shirt pulled up past
her bellybutton and her white cotton panties moist from the summer’s air.

Jack stood there at his doorway
with a half pitched tent in his boxers looking at his 13 year old sister lie
there breathing. The night light in her room glowed behind her bed. Then Jack
heard a noise. There was somebody coming up the stairs and Jack could put an
eye out with his member flailing about like it was so he tucked it in between
his legs.

A shadow was cast on the floor near
the stairs and the figure appeared. It was only the family’s cat walking
around. Jack went to go pick him up and set him is his bed. On his way back to
his room, his penis popped back up right as he passed Sarah’s room. Jack stood
there.

Jack could almost see the outline
of his sister’s pussy through her panties. Jack was 17 and even though she was
13, he thought that it couldn’t hurt to just look so he walked in her room and
stood beside her at her bed. He could see the outline of her nipples through
her shirt. Looking down at Sarah’s panties, Jack noticed how large her mound
was and how big her pussy lips must be. His penis was growing harder now and
finally poked through the hole in his boxers.

With his dick throbbing out of his
boxers he grabs a hold of it and starts to rub it. Sarah’s hand was laying on
the edge of her bed and Jack decided to lay his now sweaty balls in the palm of
her hand. Sarah then unconsciously squeezes his balls and Jack moaned in pain.
Luckily she did not wake up from her sleep. Jack looked back down at her mound.

Her panties almost went all the way
down to the top of her crack from her pussy. Jack had to feel it so he reached
his free hand toward her sister muff and he rubbed her pussy lips from the
outside of her panties. Because her legs were spread, he could feel her lips
spread apart. Just then she breathed in deep and she opened her eyes.

“Jack what are you doing?” she said
softly.

“Um…I saw a mosquito crawling on
you and I did not want you to get bit so I was getting it off of you.” She
looked at him and sighed. “I think it went down your panties though.” Jack
didn’t know what he was saying but Sarah did not seem to be alarmed. Jack
reached his hand back down to his sister’s panties and slides his fingers
beneath the fabric.

“I think I found it.” Jack said as
he slid his fingers back and forth between her hairless pussy. Just then he
feels a small hand wrap around his cock and Sarah says,

“There was a mosquito on you.” Jack
looks back down at his hand rubbing her pussy and slides her panties down. Her
clean tight pussy was shining in the light.

“Have you ever rubbed your vagina
before?” Jack asked with a smile on his face.

“Once in a while I play with it.”
She mumbled.

“Do you want to go play in my room?”
Jacked asked her.

“Why Jack?” she questioned.

“Because it is too hot to sleep.
You will never get back to sleep now that you are awake.” He said encouraging
her to fallow him.

“I guess.” She said as she slid off
her bed allowing her T-shirt to fall down to the top of her knees. She kicked
her panties off of her foot on her way out of her room. She walked behind Jack
with his penis sticking out of his boxers. They sat together on his bed with
the lights turned off. They could only see the silhouettes of each other. Jack
reached up to his window opening the blinds allowing the moonlight to shine in.

“How do you play with your vagina?”
Jack asked.

“I sometimes just rub it with my
fingers in the shower.” She replied hesitantly.

“I rub mine in the shower too
sometimes.” He stated.

“How do you rub yours?” she asked.

“Well grab it and I will show you.”
He said.

“OK.” She hesitantly replied as she
reached her hand out until she could feel Jack’s throbbing penis sticking out
of his boxers. She wrapped her hand around the shaft and he then took a hold of
her hand.

“Just rub it slowly back and forth
like this” as he guided her hand. Pre-cum was starting to drip from the head of
his penis to his sisters hand lubricating his shaft. She stopped for a moment.

“What is that?” she asked.

“It’s cum, don’t stop.” He said.

“OK” she said as she continued to
caress his cock.

Jack sat there for only a few
minutes before he felt his balls begin to tingle and tighten. He was about to
explode all over her in a few moments. Sarah, who was sitting cross legged in
front of Jack sensed something was about to happen.

“Am I doing it right?” she asked

“Ah…Yes...keep going.” He sighed.

She continued to jerking on his
member until a large spurt of warm cum shot out from the head of his penis onto
her shirt. Then several other spurts of cum fallowed as she continued to jack
him off. He moaned as the last drops of cum spilled from his penis onto his sister’s
hand. He fell back on his bed and laid there for a moment to catch his breath.

“Did that make you feel good?”
Sarah asked.

“Yes, very good.” He replied.

“Can girls feel that good too?” she
questioned.

“Yes they can if it is done right.”
He replied.

“Will you show me how it feels?”
she asked.

“Sure,” Jack replied and then he
instructed, “Lay on your back.”

Sarah did as she was told and she
lay down on his bed with her shirt still covering her pussy. Jack maneuvered
himself in front of her and pulled up her shirt revealing her muff again. He
looked her in the eyes and smiled. She grinned back and Jack lowered his head.

He kissed her belly button and
continued pecking down to her sweet mound. He kissed the top of her vagina and
began to suck on it as he flicked his tongue in between the lips. How sweet it
tasted. She moaned. He found her clit and focused his attention on it. He
licked it as it swelled and then pulled his mouth away and began to rub it.
Jack could not get over how soft and tight her pussy was as he continued to
massage her. He then slowly moved his middle finger to her pussy hole and
rested it at the entrance. He continued rubbing her clit as he began to force
his finger in. He was not even a knuckle in and she began to moan with
pleasure. Halfway past his first knuckle he pulled his finger out and he began
to move it in and out slowly. Gently pulsating her vagina with his finger, she
moaned in extreme excitement and pleasure. No more than a few seconds later her
virgin body began to tense and her vagina gripped firmly on his finger drawing
it in further. She took in a deep breath and her whole body shivered a little.
She arched her back forcing her pelvis into the air and then she collapsed and
closed her eyes. Sarah had just experienced her first orgasm.

“Did that make you feel good?” Jack
asked.

“Yes.” Sarah whispered.

Jack crawled up beside her and just
laid there on his back looking at his ceiling. He could hear her still trying
to catch her breath. He turned his head and kissed her on her on her neck. She
looked at him and smiled. The two laid there for the better part of an hour
listening to each other breath.

Jack then began to get an erection
again needed to take advantage of the situation. He slid off his boxers and
reached over and rubbed Sarah’s pussy to get her attention. She looked at him
and smiled again and he whispered for her to sit on top of him. With his penis
now fully erect and laying flat on his stomach, she sat on top of it. His penis
rested firmly in between her slit. He reached out for her hips and guided her
body back and forth in a sliding and rocking motion. Without his penis ever
going insi

of Sarah, she continued to slide
her body over his cock. Her pussy began to moisten and slide easier and more
pleasurably.

Back and forth she slid as Jack
laid his head back and closed his eyes. He had never felt anything more
wonderful than what he was experiencing at that moment. Sarah was really
getting into it too. She rested her hands behind her on the bed as the kept
sliding back and forth. This continued for what seemed like and hour. Jack
opened his eyes and watched his sister’s pussy sliding on his cock. He soon
began to feel his balls tingle and tighten again. Sarah arched her back and was
about to climax also. Jack’s penis began to throb much more and a large load of
cum spurted out onto his chest and moments later Sarah began to shutter as she
had an orgasm herself. They both moaned in pleasure then grew very tired. She
fell on top of him and rested her head on his shoulder. She closed her eyes and
so did he as they fell asleep exhausted.

An hour later Jack opened his eyes
and rolled Sarah off of him onto her side and he curled up behind her resting
his limp cock between her butt cheeks. They spooned like this all the rest of
the night until the morning sun rose. Sarah opened her eyes and looked at Jack.

“Thank you Jack.” Sarah said as she
crawled out of his bed and went back to hers.