No one is participating on the site right now, so it seems like a good opportunity to ask for some help:

I'm writing this document up for a friend's website on situations that warrant revenge.  Not any illegal types of revenge (or acts), these are supposed to be small, generally harmless situations that still deserve revenge against one or several individuals.  Here's an example:

My friend was living with 7 other people for a few months when suddenly they told her they were kicking her out.  Not because she did anything wrong, but because they would have weekly parties and since she didn't like drinking, she would spend most of the time in her room studying for class and they didn't feel that she was trying hard enough to be friends with them.

A situation like that warrants some sort of retaliation, because they were essentially making her semi-homeless because she needed to study, and that's retarded.

If you have any examples of situations like that, I'd appreciate them. They can be as minor as a workplace employee who is constantly farting.  I don't care, I just need situations. I don't really need ideas for the type of revenge,  

Update (1:02 PM) Obviously a lot of you have been not actually paying attention to the key words in this, so I'll elaborate: The website is going to be humorous, there will be joke/prank like revenge ideas. So no, I really don't care whether or not you have some brilliant words of wisdom for the above situation. I'm only looking for more situations that can be used to create additional "revenges" (as will be defined on the website).