I knew that "self" could be used as a noun (e.g. "she knows his true self"), but I had never heard of its usage as a pronoun. Here's the sentence, taken from a Garfield's comic strip:
What a tragic scenario... "Owner leaves for week... Cat locks self out of house... Cat starves on front porch"
Dictionary.com s.v. "self" (9) says: "myself, himself, herself, etc.: to make a check payable to self". As to the Garfield's strip, the sentence "Cat locks self out of house" seems to echo a newspaper headline. "Self", here, suggests that the gender of the cat is unknown or unimportant.
Is this usage of "self" typical of journalistic style or can it be used in speech to mean "myself," "himself" and so on?