I'm kind of ashamed to say it but Tina's story got me so horny I masturbated furiously. My own sister used to tease and taunt me with her nudity. My only regret was we never went "all the way". We got close though,
real close. Now she's married, has a couple of kids. It's only when she catches me looking at her lustfully that she winks. If my wife knew the things my sister and I did, she'd probably divorce me and take away my kids.
Thanks Tina. To me, your story is only believable because my sister behaved in such a similar manner.