No, seriously.  Killing the Finder is a really, really bad thing to do.  Are you really sure you want to do this?  You won’t be asked again.

Killing the Finder is a really bad thing to do.  Are you sure you want to do this?

Are you sure you want to stop this process?  This action may cause unforeseen circumstances.

The application could not be stopped using traditional high-level events.  You can try to stop the process using the same mechanism that is employed when you press Command-Option-Esc, but this may have very bad side effects.  Do you want to continue?