1) to irritate or torment someone.

not said as "her ass"
"her ass" is what you put a skirt on.

In RTS games such as Warcraft3, it is to continuuously do hit and run attacks until the enemy begins to speak in a colourful language. However this can only be done if you have the upper hand, or when you know the army is away from base.

redneck's version of her ass

When someone tells you to do something you don't want to do.

The adult version of bullying.

The process of harassment. The process of being afflicted by selfish behavior of others. A way of being. Abrasive, gritty, abusive.

Harassment is the act of bullying somebody based on their sexuality, race, religion, size, hair color, or anything like that. It is NOT considered harassment if you are just arguing unless one party is bullying you.