Our bedroom is set-up so that if you’re lying on the bed, the en-suite is to your left, and the bedroom door is to your right.
Last night, I went to bed first and decided I’d sleep on the right.
DH came up a little while later and we started watching a movie that was quite scary. When we finished, I was unnerved and asked DH to swap sides so that he could as nearer the door and could save me from approaching slasher killers.
He laughed, told me I was being silly and our rules are whoever is first to bed gets to choose the side so I needed to suck it up, and he was already comfortable and starting to snooze.