A few tips I have discovered in my own quest to fool the birdwatcher.

• Try and position your monitor out of anyone's line of sight. This is a bit of a lucky bag, if you're in the corner facing out, wahey, if you've got your back to the main office thoroughfare, get another job.
  
  Of course, if you run the office, you can sit where you like. Problem solved.
  
  
• Sit with your foot resting on the wall socket off switch. I've done this one, it works a treat. Include lots of puzzled head scratching after the event, and a big fat "d'oh" when you discover the problem/call IT to solve the inexplicable loss of power.
  
  
• Know your limits. Don't try to fool WebSense type programs or mess about trying to get round them with tomfoolery. These things have a habit of getting found out and defeat the object by getting you the sack.
  
  
• Make friends with someone in IT. who will happily delete your internet usage logs and let you download daft stuff.

As a footnote, I run an office, and I'm getting pretty good at determining just from someones facial expression and posture whether they're working or messing about on the interweb. You can even tell from things like how much they're using the keyboard.

So think on, if I can spot it, so can other evil, non-loafing bosses.

Janet