In the movie, Matt Damon's puppet character keeps repeating his name over and over again, throughout the whole movie.
According to an AMA interview on Reddit, Matt Damon had this to say when asked "What did you think of Matt Stone and Trey Parkers portrayal of you in Team America World Police?"
"I thought it was brilliant! I mean, I never understood it, and then I heard an interview with them and they said the puppet came in looking kind of mentally deficient and they didn’t have time to change it, so they just made me someone who could really only say his own name. All the comedy they’re doing is really next-level stuff. Also, I liked being included as a person who was against the Iraq war."