Alice and Amber have been together their entire lives, quite literally. They were born attached together in one body, which they both shared and controlled. With both of them being able to control any of the limbs on their body, they're often at odds with one another, as they often dispute over who gets to control the body and when. Since neither of them has more dominance over the body than the other, they've had to come to an agreement to try and control only their respective half of the body, Amber getting the right side and Alice the left.
Still, this doesn't prevent them from occasionally going into power struggles with each other. When they both try to move the same limb, unless they're trying to move it the same way, it'll instead just twitch and jerk from the mixed signals of their brains. These power struggles usually happen when they can't come to agreement on doing basic things, such as which way they want to go, what clothes they want to wear, who gets to eat what food, etc.
As Alice and Amber have gotten older and matured, less arguments with each other over their body occur, as they've grown to be pretty well in sync with one another. Their coordination is great for the condition they're in, being able to do many tasks in cooperation with each other, as long as they agree how to do said tasks.
Being in one body of course leaves them with no true privacy, as they're always together. The only "privacy" they have is when they're alone with each other. This leaves them in awkward situations very often, as there are many private things they like to indulge in, but have to do together, such as taking a shower, using the bathroom, or indulging in masturbation. And one body means they only have one set of private parts to share equally, so masturbation is something that is difficult for them to do, as the only way they can do it is when they're both in the mood, and even then, they have to agree on how they want to masturbate and who gets to do it.
Most of the time, they'll just take turns touching themselves, as they both like it done in different ways. On occasion, however, if they're both in particularly good terms with one another, they'll agree on a method and do it together. Other times they'll argue over it and eventually have to call it off because they ruin the mood for themselves.
Anyways, that's their background. Now, the perspective changes to their point of view. At that moment, they are...