So, this really rude patron needed help on the computer but they didn’t want to do anything themselves. They actually tossed the mouse at me and said, “You do it.” I refused to hold the mouse or type for them. Long story short, it came down to me pointing at things and telling them what to do. Eventually I told them they had too many windows open to things they didn’t need. I pointed to one and said ”close that window.” Then they clicked the wrong one and totally lost the entire application they were working on.