In every single group project at my university, there is always that one guy that doesn't do shit:

Last year, we were a group of four students developing a website. One guy had never seen HTML before and was just filling the website with lorem ipsum and break-tags. One student didn't work a lot on the project, but developed a few bugs. The last guy, did not even spend 1 second working on the project.

A few days remaining before the projects deadline, and all we had left was to write a report on how we did acceptance testing. I was sure he would not get the same grade as the rest of us since I emailed the course coordinator, saying that this guy hadn't been contributing with shit.

However, just before the deadline, this guy starts making massive amounts of commits to the repo were he changed like one single character in our report, or just edited single words. The course coordinator probably just checked to see that everyone had committed to the repo, because everyone got the same grades!