The problem was that I was assigned two other people in the project that were slackers (one was only barely a slacker (The type that will work if given a task, but can't take the initiative), and one was full-on slacker.)
When we were presenting our final product, we had to do it in front of a medium sized group of people (15 to 20). The barely-slacker did fine, and I knew exactly what I needed to say, but when it came to the total slacker, he stood in front of the whole group for about a minute in absolute silence (part of it was fear, I'm sure, but part of it was also incompetence.)
I ended up having to do random crap like scratch my face and quietly feed him his entire speech, just to try to save face.
At the end, we were required to evaluate our partners and the level of contribution they gave to the project out of 60 possible points. I decided to be nice, and I spread out the points as 30-20-10, but if I'd have been honest the points would have been more like 40-18-2.
What makes this worse is that I'd had uber-slacker in a group project before and knew he was bad news but our groups for this class were assigned by the teacher, so I didn't have any say in the matter. F****** group projects. I HATE THEM.