Your co-worker keeps a calendar at their desk that was purch…

Your co-worker keeps a calendar at their desk that was purchased through a fundraiser for firefighters. Each month, the calendar displays a picture of a firefighter wearing their work uniform in a suggestive (sexual) manner. These images make you uncomfortable and you have asked your co-worker to take down the calendar, but they refuse. You have decided to approach your manager but want to make sure you are using the appropriate staffing terminology for the situation. What is it?