Why do bullies think it's funny to bully someone?

they think its fun to bully others because they think that making some one feel bad makes them feel good, like when you win a game you decide to brag about it, or when you win an argument that's when people feel they have all the power then they over power. That is why its important to stand up to the bully. If you don't later on in that grown ups life or child's life they will be messed up then will have to find a way out.

ANSWER 2:

I just answered a similar post, but basically many bullies come from homes with family issues. They may have been taught to use rage and violence to handle problems. They may think that their behavior is normal and acceptable. They may carry their own emotional pain deep inside and just want to dish it out. Some may have been taught to get their own way they have to be abusive. The get what they want-power, status and attention. The reality is bullies and those they bully need serious help from their parents or trusted individuals like school teachers and administrators and the police. Bullying is a crime and just cannot be tolerated. see Awake magazine