"Um, Olivia... is your sister always, like this? She seems, well... a bit feral for lack of a better word" said Melody while she watched Olivia restrain Jen who was constantly trying to get closer to Melody so she could suck her cock.
"Yeah, here's the thing. She has this mental condition where if she sees or hears about a dick, she gets an extreme craving to suck on it. It is almost like she goes into a different state of mind entirely. We had her checked and it is not harmful to her, nor could they find a cure either. So yeah. She will calm down after 10 minutes of not touching a cock though. Just dont say the word or write it down. I guess in your case, wear a skirt or something to hide the buldge may be necessary too."
"Oh... huh. Well I guess that makes 3 of us with an unusual situation. Your transgendered, I'm a naturally born hermaphrodite whos body has grossly enlarged all of my sexual characteristics to a disproportionate scale to the rest of my body, and your sister's mental disposition is, well, the first time I have heard of anything like it if I am being honest." Said Melody.
"Oh, that's not all. She can only swallow cum, only needs to consume cum, and her head can't go above waist height. Plus her obvious facial feature and moaning seems to be the only sounds she can make. But do not worry, somehow you just know what she is trying to say after a while." Continued Olivia. "Now then, can I ask you for a big favor?"
Melody just grinned and nodded, before ssying "of course I can watch her for you for a while. I assume she needs to be fed as well? And for how long?"
"Thank you so much. I have fed her about 80% of her daily needed amount, so just 1 more orgasm worth should do it for today's meal. She needs about 5 or so of mine every day, and they do not role over from over eating either. So if you do not mind... just for the weekend. I can pick her up sunday night if she is too much of a hassle. She needed to get out of the house for a while and our parents have been worried about her becoming a shut-in. So I know its asking a lot, but please if you could."
"Are we allowed to have sex?" Asks Melody.
"Er... you can certainly let her suck you off. But ask her when she is sane again about having actual sex. Oh, and you may find yourself being unusually dominant around her. That's normal and you just have to go with it." Olivia then let go of Jen, got into her car ,and drove off. The second Jen was able to do so, she bolted right over to Melody and pressed her face against her buldging pants, trying her best to look for a way to get at it. But since there was no hole for her to unzip had caused her to momentarily hesitate until she figured out that there is no easy access point and that she needs to strip the leggings off of her. But before she could do so, Melody stopped her, by grabbing her mouth like a handle and lead her inside by it.
Once inside tye house, Jen was released but told immediatly to wait and to use her heels to pin down her own arms to the floor. Jen quickly did as instructed as she was flexible enough to do so and waited impatiently. Melody came back with some kind of wrap and began to bind up Jen's body in that shape. She made sure that Jen's feet and shoulders were basically connected now. She then bent her arms back behind her back, and over her feet, before binding them too.
Once Jen was fully immobilized, Melody picked her up and wor her like a backpack, with her legs being used like arm straps. She had Jen upside down too, and then removed her leggings, letting the back if Jen's head squish into her enormous ball sack. She then carried Jen upstairs to her bedroom and set her down on the floor gently. With her legs bound still, Melody positioned Jen so that she was using her thighs as a base, and was leaning backwards with her head resting on the foot of the bed. Finally Melody gave her a kiss and sat down on her face, letting Jen's mouth go right up into her pussy as she sank deeper into the soft mattress.
Jen could feel her massive testicles resting heavily on her upper chest. Melody was loving the feeling of Jen's mouth inside her pussy as she began stroking her cock. And while Jen would have preferred her cock, licking her pussy was not bad either, and cum was cum, no matter how she got it. It doesn't matter if it came out of a cock or a pussy, as either way it would be very edible. And just because she is currently face fucking Melody, it doesn't mean she can't suck her dick later on as well.
"Oops, Olivia said I was supposed to ask you first, but you seem to be enjoying it. Or rather, I don't really care if you are or not anyways. Oh! This must be that dominance thing Olivia mentioned. Huh. I usually am not one for this kind of play, but I can see how this would be kinda fun in its own way I guess. It just doesn't do it for me personally. I would rather do more bondage play than do just this, but for now it isn't that bad." Said Melody mostly to herself.
Jen could hear what she was saying, but the meaning behind the words she spoke didn't really register quite yet in her head. She was much more interested in making this pussy, which her mouth had been forcefully shoved into, to cum. And she was not having a bad time either. Unlike her sister, who had very tiny balls, Melody instead had huge balls. Like almost unsettlingly huge balls. Each one was at least the size of a softball and seemed to just have enough room to fit as her scrotum had practically no wrinkles to speak of. Jen wished her hands were untied as she could hold them, rub her face with them, and eventually suck on them. Although she definitely could not fit them inside her mouth, so perhaps she would just wrap her long tongue around them instead.
Melody was now getting very close to her first orgasm, so she pulled herself up off of Jen's mouth, which was a little bit difficult as she was momentarily stuck due to Jen's mouth creating essentially a vaccuum seal with her lips. But with an audible pop, she pulled herself off and quickly turned around and faced Jen with her massive cock standing fully erect and ready. In a single motion, Melody picked Jen up and tossed her onto the bed, so that she was laying down on her chest and pushed Jen's mouth pu against her cock's head.
Jen wasn't sure how, but she was determined to fit this thing into her mouth. It was only about 3 inches in diameter so she was confident that she could manage it, but this would still be the largest thing she has ever fit into her mouth so far, so she was a bit excited. Just before she tried it, a thought occured to her. Would it perhaps be even better if she were to penetrate inside of it instead of wrapping her lips around it? Now she couldn't decide whether to suck it for insert her mouth into it. It looked bairly wide enough to do this with her full mouth to maybe an inch deep or so, but easily more could be inserted if she just used her tongue.