In black culture, are you obliged to acknowledge everyone around you?

What I notice about my black friends is everyone in the room is their main concern. If we are here for a job interview, they will spend the whole time making fun of people's clothes. Or if we are doing something, they get mad if I don't listen intently about their personal drama.

For everyone else, we play the script and make personal engagement a superfluous option. I can work on an oil rig without having to worry about my social status like high school.

Is it an "unwritten rule" among black people that the waiter who doesn't marry your sister in 15 seconds, is dismissed as an as*hole?" I know some you can take the word "toothbrush" a racial slur, so go eat a dick and then brush your teeth. But when you come back, it's time to answer the question.