Co-workers can be extremely annoying - without even trying. Things like taking a personal call on a cell phone and talking loudly,  rambling endlessly about your long lost aunt's chronic hemorrhoid problem, and not cleaning up  your mess in the break room can really get the ire of your colleagues. Imagine how annoying  you could be if you really tried. Here are 20 ways to annoy your co-workers - on purpose.

1) Unplug a co-worker's monitor

2) Empty the paper out of the main copier/printer

3) Hang up the phone before they say goodbye

4) Slurp hot coffee during meetings

5) Misplace people's pens

6) Put a piece of tape over their mouse optics

7) Put salt on someone's mouse pad

8) Swap co-worker's chairs

9) Tell a long story without a point

10) Tell a co-worker you liked their hair better last week

11) Forward chain letters and spam to co-workers

12) Gradually turn down the volume on someone's phone

13) Hide the sugar and the creamer

14) GIve everyone a nick name from a TV show

15) Use the intercom and page yourself

16) Talk to your monitor as if it were a person

17) Swap the regular and decaf coffee

18) Leave your cell phone on your desk with the ringer turned all the way up, then walk away

19)  Use too many paper clips

20) Burn popcorn in the microwave 

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