I had barely started when I heard a knock at the door.

“Jake, I just need my hairbrush from the bathroom.  I’ll be quick,” Kate yelled as she entered the bathroom.

How could I have forgotten the lock was broken.  Even so, who would have thought this would happen.  Before I could respond, she had entered the bathroom.  When she walked in I was still jerking off and making noises.  Her immediate response was…

“What are you doing,” as she turned to see me masturbating through the glass shower.  I was done for now.  I expected her to scream and run out, but what happened next changed my life forever.

“Jake, what are you doing to your…”

“You mean you don’t know?”

“Well I have heard boys do these things and Maureen did it to Joey Fields once, but I don’t know how.”

“Oh.”  That was the only response I could muster.

She giggled.  “Is that all you can say?  So that is your penis?  I have never seen one before, can I touch it?”

I was shocked, my little sister wants to touch me.  My rock hard dick grew even bigger with this statement.  “Sure sis if you want.”  She walked over to the shower door.

“Can you come near the door?” she asked.

“No you get naked and come in, I am doing you a favor here.”

“No way!”

“Hey, I am already naked and you see all of me.”  I quickly replied.

“Fine, I just…”  She didn’t even finish her sentence, she just started taking her clothes of with a half angry, half happy, face.  My cock got even harder, my dream was coming true, my sister was taking off her clothes in front of me.  She reluctantly took each article of clothing off.  She looked beautiful with her semi mad face.  Eventually she was down to just her bra and panties.  Then she did something that almost made me blow my load right there.  She looked at me with her gorgeous, sparkling blue puppy dog eyes and cover herself with her arms and hands.  Then she said, “I am scared you won’t like my body.  You look great but I don’t know, I might look weird.”