Today a man was kind of agitated because his new employer was having him fill out his W4 form online and the instructions weren't very clear, so he came up the desk and described his problem to me and asked for help. When we went back to his computer, which was in the back row of our public PCs, far away from the desk, his girlfriend was waiting for him. The first thing she said was "You need to shush! I could hear you all the way from here!"
It's funny how I love it when loud people's friends/family members/caseworkers shush them at the library so that I don't have to, and yet when strangers do it, it never ends well.