joiner
Someone who unfortunately interrupts your personal bathroom break time by using the bathroom stall directly next to you, essentially joining you while you do your business.
Example:
My bathroom time is my personal time I would prefer not to be bothered by a joiner.
I use the restrooms on the 25th floor because there are too many joiners on 26.
My bathroom time is my personal time I would prefer not to be bothered by a joiner.
I use the restrooms on the 25th floor because there are too many joiners on 26.