Looking for Summer on Uncle's farm story

The story is as such from what I can remember:

Sister is mid-late teens with slightly younger brother.

Told from sister's point of view. Her younger brother first ties her to a tree with the help of a friend and they tickle her (until she has an orgasm). They stop and the brother realised what happened.

Soon after the brother talks her into trying some things out and ties her up in the loft of the barn. He later forces her to be raped by a black man (or boy). The brother uses this as a way to have sex with her (until she finds out if she's pregnant with the black persons child or not).

If this sounds familiar to anyone please help! it is the only story from "back in the day" that I was indoctrinated to BDSM stories with that I simply cannot find anywhere.

Thanks

I can't point you directly to the story, but maybe I can make it easier to find.

I find the search capability on this site limited. When I'm looking for a story where I know some of the characters or phrases, I use Google. Just go to advanced search, specify only this wegsite, and it often pops up right away.

Hope this helps.

Yeah - I've googled the heck out of it - come up with lots of fun stories but never the one I'm looking for.

THe thing is I can't remember any specific phrases that might help me narrow it down.

Kristen Archives is a no show - this place has some good ones but not that - literotica didn't help - I'm begining to think I must have found this back on a newsgroup somewhere and it was a one time never again published post...

oh well...

Thanks anyway :)