Just chill out.

Please. If you don't like answering questions, then you don't
really have to post on threads like this. You're entitled to your own opinion, but no one's forcing you to answer. Nothing personal, just putting that out there.
Now to answer the original question... Jailbreaking is basically when you hack your iphone or ipod touch to go around apple's locks. This allows you to install third-party applications, or do whatever you want to do with you itouch, as for that matter. Remember that if you do this, it technically voids your warranty...so if your itouch breaks or messes up, you'll just end up with the world's most beautiful paperweight. (not that it's likely that something like that would happen)