Revenge: what do you think of it, and how do you really act?

Okay, so I’m sure the majority will likely say that revenge should not be the answer. But really, when you feel really down and all you want to do is get back at someone, do you control your feelings or actually let your actions take control and act on revenge?

I’m not suggesting anything as serious as murder and revenge, but I’m thinking something as simple as a little verbal fight. For example:

A male becoming upset with his cousin because all the cousin had been doing lately was spending time alone in his room playing video games. The male had just given up playing video games and just wanted his cousin to spend some time with him off of video games. Irrationally, the male headed into his cousin’s room and droned on about how he was such a loser and suggested that he had no life.. etc. Although the male intended for the droning to be merely an encouragement for the cousin to get off games for a bit, the cousin took it very personally and became angry.
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Okay, so, if you were the cousin, what will you do now? Plan to attack and get revenge from the male verbally and make him feel as bad? Shove it in his face about how terrible the male made him feel? Or just confront him as nicely as possible about how it had really hurt his feelings?

(okay, I made up that example, but this question is out of pure curiosity)

Thanks for input, if any. :)