Think of these shirts as the pop quiz / secret handshake of all Hollywood geeks.
Available at lastexittonowhere.com their meaning is only apparent to those who have either watched the movie or know enough about pop culture to get the reference. (The significance of Amity Island? The setting for Jaws — duh!)
Of course, still higher on the Hollwood Fan List of Things to Know and Do is to stand on the Walk of Fame and kiss the ground that one’s idol has literally walked on.