It's rude to discuss someone else's health with strangers.
Jules is a hospice nurse with many stressful patients and is out at the grocery store after work.
Jules wants to buy some groceries.
Jules picks out everything she needs and uses the self checkout lane because there is no line.
When prompted by the cashier as to how her day is going Jules vents about some of her patients and their conditions.
Jules gets out of the store and home with her groceries a little quicker.
Jules reveals privileged and confidential patient information to the cashier which the cashier probably didn't want to hear to begin with.