Here's another April fool trick I played once on my colleague who didn't know much about computers. One day I was working with e-mail and told my colleague that my friends had to send me twenty dollars by e-mail. My colleague didn't understand and started to ask me about the details. But I only replied that he will see everything with his own eyes.

During the whole day I was extremely excited and constantly wondering why they are so slow with the transfer.

But the right before the end of the working day I happily cried our: "Hooray! Here it is!" And then I opened the CD-ROM and grabbed my money from there. I previously put it there. My colleague was standing and looking at me as if I was crazy. And then I cried laughingly: "My congratulations! You've been fooled! Happy April fool day!"