toilet etiquette

Allow me to share a recent experience. I was sitting minding my own business (literally) in a toilet cubicle at work. The next thing I knew, a phone started buzzing in the cubicle next to me. What happened next violently shook the unspoken rules of toilet etiquette. She answered it.
When you've got to go, you've got to go - even when you're at work. But what happens if your boss also gets the call of nature