(1) A female from an origin of poverty and financial ruin.
(2) A Derogatory word defining a Female without the money to purchase the latest fashion. Usually a Female wearing Thrift store clothing, or clothes bought from a second hand store.
(3) A Female willing to do nearly anything for little cash. Up to and including giving Happy Endings
Man, I need a "Third-World Girl" so's I can have a Happy Ending
Hey, Whose that "Third-World Girl" I saw you with last night?