Office Prank: You're Being Replaced!

I'm sure all of you have a coworker that you really hate, this is how you get back at him/her. Make them think that their job is on the market!

Requirements:

Time (low) - all you’re going to need to do is write a job ad - shouldn’t take you much time.
Cost (low) - you can go the cheap route and put the job ad up on all free sites or you could pay some money and put it up on a big job site.
Risk (low) - there’s really not a big risk for you except for maybe falsely advertising a job that doesn’t exist (which is cruel for the people that’ll call as you are wasting their time).

Steps:
Fill out an ad for the job your coworker does. Put their phone number and email as the contact info and make sure to put in some interesting job requirements.
Put the ad up on your favorite job listing sites (JobStreet, JObsDB, Monster)

Result:
Depending on what you put on your ad, you’ll get different results. If you went the obvious and easy route, like putting down a high amount of pay with low requirements, your victim should get a lot of phone calls and emails, which will either scare him a bit that his job might actually be open.

However, you could also go a more creative route by putting down some interesting requirements. Perhaps the applicants all must speak a certain language that isn’t English, or must all send in essays on why most people (like your victim) don’t do their job well. You could really have some fun with it, but keep in mind that you are going to be wasting the time of some actual job applicants!