I have a wicked mind sometimes. And sometimes I do something about it.
My kid sister, Elizabeth is 15. She is very flirty and always makes her presence felt. My boyfriend is often treated to a flash of panty or breasts. (She never wears a bra)
One night, after Elizabeth had put on an unusually provocative show that included him seeing practically all of her breasts and her sitting on the lounge floor with her legs wide apart, Steve and I were making out in my room. It was going OK, but I could tell his mind was elsewhere. He had fingered me off to two lovely orgasms, but he was having a little difficulty getting off himself.
Then I had a wicked idea. I said to him 'I bet you'd cum if Elizabeth was in here.' I felt his cock twitch and knew I was onto something. So I quickly nipped out of my bedroom and having found what I was looking for I came back and resumed jacking him, but this time, I began to talk to him.
'I bet Elizabeth jills off thinking about us fucking. Did you know she shaves her pussy? Sometimes I hear her cumming in her bedroom. Can you imagine what her pussy smells like?' To this I got an 'Oh God. I bet its sweet.' That's when I produced my surprise in the form of the panties my kid sister had taken off when she got home. I held them under Steve's nose and said 'Smell her. They're still wet from her tight cunt.' Well, my dear boyfriend shot his load across my room.
The thing is, it was intensely horny for me too. I finished my making him jill me off again, and I must admit, I had a little smell (AND a lick) of Elizabeth's wet panties too!
Naturally, Steve asked me if I ever got it on with my sister, but I had to tell him we haven't...yet!