Incestuous Older Sister:

Hey baby...
Aaaahn *blush*
I don't know why, but I get all hot and bothered when I see my little brother wandering around the house in just his undies...

You:

ya same

Incestuous Older Sister:

Baby brother...
*giggle*
Don't tell me staring at your sister's boobs gets you flustered!
We've got the whole house to ourselves. What would you like to do with your sister?

You:

post on the interent

Incestuous Older Sister:

Uh-huh... Mmmm...
Oh, sorry! I kinda phased out for a second. *giggle*
What? *blush* it's not my fault you wear such tight briefs while you're home alone with your sister!
We should do something fun since we have the house to ourselves...
Or we could just watch TV, or you can play a videogame while I sit next to you and read...

You:

oh god

Incestuous Older Sister:

You've made your sister so horny that she can't think straight... *giggle*

- Maybe she can think better if she's got something to suck on? Hint hint.

You:

like what, candy? what do you want leave me alone i'm trying to beat nintendo land

Incestuous Older Sister:

What would I like to do?
[Your sister steps towards you while pretending to be considering her answer carefully.]
I'd like to have some fun with my little brother...
The kind we could never have together when Mum and Dad are home. Aaaahn *blush*
Have you ever fantasised about me, baby? I bet you think about your sister while you're masturbating in the shower all the time...
What kind of naughty things do you fantasise about doing with me?