What makes you really, really mad?

Human life is not a bowl of cherries, we all know this. But some incidents come along that make us see red. Like, trouble with a bf or gf, losing your job, the car breaks down, your income tax refund was held for reasons unknown, your unwed daughter becomes pregnant, someone breaks out your car window with a baseball. These are but a few of examples of us seeing “red”. Question: so what in life really, really makes you see red and mad? Anything goes.