But seriously: conversations should be kept to a minimum, cellphones are right out.
If you can't keep it down while in the stall, you should probably see a doctor and/or a nutritionist.
Do you want to know the issue I have?
I think I'm in the minority of people who washes my hands. Very few people do, and many who do use the tap are only pretending. They get their hands wet and then leave. I have an issue with this because everyone touches the same handle to get out of the washroom that I do. Ew. And if your hands are wet (instead of actually washed), it's even worse. That water is an awesome transmitter of whatever you failed to wash off your hands.