Your mother had always told you to help your little sister whenever you can, because someday you would be hers, as in, fat on her cute little fanny, so you don't want to say no to the little nymph. Besides, you love her, and share a tight bond with your little sister, being protective, but at the same time, submissive to her desires. Your mom would be furious if she found out, but actually, since that time when you awoke to find Amanda straddling your body, you have been having secret rendevous at night, getting to know each others bodies more, especially each others privates. You have had the pleasure of being queened by that slightly furred muff of hers on many occasions, and it satisfies you so much more than when she focuses on giving you pleasure, or even performing mutual pleasure. No, you know your place in the food chain, you are your sister's, through and through.
"Sure, Amanda, what do you need help with?" you ask, watching the somewhat nervous smile on her face.
"Well, I need help with my swallowing practice." she says a bit nervously.
You can't quite understand why she is so nervous about that. You had helped her with her swallowing practice assignments many times in the past, from that watermelon last week, to that first orange she swallowed two and a half years ago. She had even swallowed your arms on several occasions, and even your head, so you can't imagine why she would be nervous to ask you about. "Of course, I love watching you swallow things. What's the assignment?"