I spend almost /all/ my time on this site reading and liking posts, but can never really think of anything to say
It drives me crazy, haha
This one is pretty generic, but people who come into work, and act all angry and gloomy that they have to be at work.
If youd just keep a smile on your face, and think about how much you can get done before the day ends, youd be surprised at how it helps the mood of those around you, and makes the day go by faster and become all around more enjoyable.
But some people just seem to hate the fact they have to spend some time at work that they want everyone around them to be as miserable as they are :/