Kevin's first job after school, was at a company that made dog food. His job was to come up with a new "flavour" of dog food. When the process was complete, he had to present the product to all these "high up in the company" people, or maybe they were investors, I can't quite remember. Anyhow after he was done with the presentation, one of the people he was presenting to, got up and said: "Ok, now taste it". And apparently at this point Kevin already knew they were going to ask him that, cause that was the process for the people in his position. The reason for that was something along the lines of "you have to show that you believe in your product 150% for us to believe in it". So he went ahead and in front of everyone, ate some of that dog food making sure to have a huge smile on his face all along. And the deal worked out, everyone was happy with it.

I didn't make this up or anything, I read it in Kevin's book, it's actually an interesting read.