How do you get best friends mad at each other?

People get their friends mad in so many ways.

they say hurtful things . for example by calling them names like leach, lazy, ungrateful, scum, no good, good for nothing, cannot stand you, no one wants you, pathetic ( the list goes on.)

people say things to get you mad, because they know you have a weak spot, so they will hurt you with Words, knowing you would get upset and storm out, or start crying, stay to yoursel and not speak. they know you would retaliate and hurt yourself.

there is a saying, "Misery loves company". they are miserable so they want you to be miserable to. people can be cruel, they mess with your mind.

it is all about control.