How does one choose a title for a script?

I think of a phrase that is

  • easy to remember (no weird words, not the name of a character)
  • not used by a famous movie already
  • unique enough so that a google search on the title will find my movie immediately
  • easy to include in a spoken line in the piece
  • evocative of the piece, so when someone has seen it, they can easily remember seeing it given the title

There are some exceptions, for example my intentionally-opaque short “INTERKOZMOSZ ALIEN AUTOPSY”