1. Work during lunchtime, lunch during worktime
Or you can come early and work first, then eat during work. Why? Bosses are only out of their room when they're arriving in the morning or leave for a break. This is the 'impression window', where you should display all your fake commitments towards your work. When they're in their room, you can then display your real commitment towards their doom.
2. Plan (imaginatively) your progress
When you sign in in the morning, always plan what you should do for the entire day. When your boss suddenly calls you, show him that you're prepared and committed to resolve your assignments for the day. Then you can proceed with your nap.
3. See your boss for pointers
Bosses dislike passive workforce. See them regularly, asking important pointers on your task and explaining your progress (see above if you don't have one). FIND SOMETHING TO ASK. It displays your willingness to develop. These should also give you some peace of mind to relax in your cubicle, saving you from his surprise lurch to your table for updates and questions.
4. Subscribe to relevant RSS feeds
If your office PC is connected to the internet, subscribe to the Really Simple Syndication (RSS) feeds from related websites in your industry. RSS feeds are updates (depends on the site) providing you with quick insight and summary on the latest information you need. Set My Yahoo! or iGoogle as your homepage, where you can put multiple feeds in a single page.
If you work in a tech company for example, you can subscribe to the RSS feeds from various tech blogs and news sites to stay connected with the latest development without the hassle of reading through the whole newspaper. Raise some of the points you noticed in the RSS in your department's meeting - and mesmerize others with your informative living!
Learn more about RSS. You can try subscribing to this blog here.
5. Always bring some sort of documents around
When you go around to other department for a little chat, don't forget your papers - any papers. Roll it and walk fast. It gives an impression that you're on a formal assignment. When you drop by your target's desk, put the papers on the desk and point at it in regular intervals while enjoying your irrelevant conversation.
6. Invite friends for Skype
If your office is using Skype, invite your friends and families (especially your girlfriend or boyfriend) to use the messaging tool. It's hassle free, and appears more professional. If downloads are not allowed in your company, Yahoo Mail (beta version) or GMail- they have a built-in chat ability to deceive your boss as if you're checking your email!
7. Always keep spradsheeds and word processors ready
Before you steal your company's time for your Facebook or EBay surfing, make sure your Excel (or any application software you use for WORK) is loaded and ready. DO NOT MINIMIZE THEM. It eases your cover-up in case of your boss makes a surprise attack.
8. Never Submit Your Assignments Early
If not, you'll be given new task, and there goes your on-line chatting session.