Only a few months ago, my sister was so pure that she had not…

Only a few months ago, my sister was so pure that she had not even thought of sex. But now, since I’ve corrupted her with sex, she has become such a slut that while we were fucking last night she felt thirsty. I told her to go get a glass of water but she said, “Why don’t you just give me your yummy piss to drink, brother.“

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