An AntiPattern.
Make the project look bigger than it actually is so that more funding goes into the project.
It also looks better in the resume: It lasted longer, it had more people, therefore it was more difficult. All others seem toy projects compared to this one.
A simple way to do this is to add more people to a project that is already late.
Compare this with: The project I worked on had X million lines. MillionairesProjects?
A simple way to do this is to use CopyAndPaste.
See WhatIsaProject.