There are everyday, run of the mill gags to play on your co-workers, and then there are the videos you see below – also known as The Greatest Office Pranks of All time!

1. The fake wall!
   A great office prank requires three things: dedication, commitment and way too much time on your hands. A good example of all three, the construction of this fake wall in a highly trafficked office hallway is inspired simplicity at its finest.
   
2. An office wake-up call, without the caffeine!
   For anyone who has watched their co-workers whittle away the hours playing Tetris or Microsoft Solitaire while collecting the same check as you do, this video illustrates the downside of zoning out in front of videogame when you should be working.
   
3. Why you should never make copies at the food court?
   When we think food court, only Sabarro’s yummy pizza comes to mind. But evidentially in England (or is it Australia) the mall is a great place to copy and collate. Just keep an eye open for those hidden cameras (and maybe even Bob Saget).
   
4. Beware the upside-down tea cup.
   Why only 100,000 You Tube visitors have watched the classic “fun with science” prank is beyond us. It’s as hilarious as it is destructive! Enjoy.
   
5. Balloons Away!
   While the boss is away, the mice will be really, really unproductive. Give the worker bees a credit card, access to a nearby Party City store and watch what happens. Bonus points for the Wagnerian opera soundtrack that accompanies this prank.