It's rude to spit in white people's food.
Brooklyn is at her job where she is a waitress and is serving a particularly rude customer.
Brooklyn wants to vent her fustrations.
Brooklyn tells her boss that she needs a break, so she can get some air.
Brooklyn decides to spit in the customer's food as revenge when she brings it out to them.
Brooklyn's boss takes care of the customer for her and Brooklyn is able to calm down outside.
Another customer sees what Brooklyn does and gets her fired from her job.