Co-Worker Bad Habits-Anyone You Know

Everywhere you work... doesn't really matter where, there is going to be someone... or someone(s) that will bug you with their "bad habits".  If you think there isn't anyone that fits any of these things... hopefully that person isn't you.  Ha!  Kidding... kind of.

My biggest pet peeve would have to be the microwave.  Like if something explodes in it.  The person who had that happen knows that it happened and they don't wipe it out.  It isn't anyone else's responsibility to do that... it's yours.  Clean it out!  Or people who cook smelly food.  I'm not sure what the solution to that one is, but still.  Annoying. This is what is known as a "Food Offender".

Here are some of the other things that universally people found annoying about co-workers.  

What's your biggest pet peeve?  Do you address it or are you passive about it and just tell everyone else?