Found in an old application (circa 2002):

exit;
/* just in case.*/
return false;

In case of what?  Are we not trusting the exit statement anymore?

This reminds me of a West Wing scene from the episode Swiss Diplomacy:

Bartlet: This meeting doesn’t go in the Sit Room anymore, okay? I don’t know why the hell it’s here. This isn’t a military operation.

Leo: It’s a secure room.

Bartlet: My office is a secure room, too, isn’t it? Please, somebody tell me it is, or I gotta go pack some stuff. You see my point?

If exit doesn’t work, I gotta go pack some stuff.