This is one sleeping position you don't want to be in. Unless you are the offending bed hog, of course. Though even if you are the bed hog, things probably won't work out too well long term if you keep up your selfish sleeping habits. The bed hog situation occurs when one person assumes the starfish position, leaving the other partner fighting for scraps of mattress space. In most cases they end up waking up throughout the night practically hanging off the bed.
The bed hog is probably one of the biggest red flags that something is wrong in the relationship if you're just looking at sleeping positions. It hardly even needs explaining when one person feels entitled to all that space and doesn't even care that their partner has been left uncomfortable and without what is rightfully theirs.