I was told to present an app that was hardly finished and that the company really needed the sale. So I worked through the weekend and basically slept in the office getting this project working perfectly. Monday I am there in my suite and tie ready to sell it, only to be told that 'Monday is the internal presentation' so feeling like a boob I present it to my colleagues. The when Tuesday comes, I do the presentation only to find out the client bought the app months ago. Man I was cross.

Then, the CEO gave me a high five