I am always wondering how women beyond some certain volume might **82** in bed.
I imagine that it might be most confortable for her not to **82** on her back, cause all the weight might pressing against her chest for each breath,
but it might be more confortable to slepp on the side so the weight is released from the body and supported by the mattress.
As the width of the boobs increases, they push you from being able to lay on your side, further and further toward being on your back. Beshine has confirmed that she can only lay on her back to s1eep and OF pictures repeatedly show that when one breast is lying on the bed, lets say the R, the L breast is lying against the R but essentially supported by her chest as it aims toward the ceiling. In this position, as we see in numerous OF pictures, her L shoulder (scapula) is only maybe an inch off the mattress. And as she has shown in videos, for her to change her position, like to move her boobs from lying slightly R to lying L, it requires both arms to move them. And when she wants to sit up or get to the side of the bed, similar to what Foxy said, she has to put both hands behind her, push her upper body to a somewhat reclined position, and wiggle herself like a turtle on its back, to the side of the bed. I found it interesting how Foxy termed it and have one video where you actually see Beshine doing it as well as the effort in changing positions.
So it is like that beeing on her back in bed would me more comfortable than on the side.
I didn't expect this as when lying on back each breath has to lift the weight on her chest 
Would like to see this **83** position in a real situation and not that camera-modified ones, but this might not happen in real life.
Just as recently as Feb 28th, Beshine can be seen in this position; while her hips are turned to the left, her left breast is lying on the bed, yielding a turn of the shoulders to where her right scapula is barely off the mattress. You can see her mimic this position on the 26th, but from a more frontal view. It is because of her extreme breast width that she can only turn as far as her sideboob will allow. The only way that she can actually be on her side is shown on Feb 18th, where she lays at the edge of the sofa with her boobs extending past the edge. In this position, as a number of photos show, her lower sideboob is just inches from the floor, and you can imagine that as you lifted that boob up to cushion height, it would rotate her onto her back. I would estimate her boobs have only got about 2" lateral play to move side to side. She made a video showing her s1eeping position perhaps a year or more ago and how she has to move to get off her back.
I have to imagine that most of the weight of the boob on the mattress is off her chest, but the boob left projecting towards the ceiling remains entirely supported on her upper chest. She has gotten used to the increasing weight over the years and I doubt it bothers her at all. I kinda doubt it would be even as cumbersome as your wife lying on top of you as you watch TV on the sofa and lets face it, if you don't roll off immediately after sex, that is more weight than a single Beshine boob. M did a 80lbs mockup of Beshine size boobs a few weeks ago and as I recall, he didn't find the s1eeping position difficult, though his water filled balloon boobs were not as wide as Beshine's, so he could turn a bit more.