A person/thing that wishes they were Mexican. They may only date Mexicans or Latinos. They have a sick infatuation with the Hispanic race. They become fat from eating to much beans. Names usually start with a 'G' and end with an 'A' and are typically 5 letters long. Last names must be 7 letters long.
Somebody of non Mexican descent who acts like and wishes they were of Mexican descent.
Wigger is to nigger as wannabeaner is to Mexican.
Joe: "Hey, have you seen the new kid in English? I've never seen a Mexican named Clark."
Ted: "That's because he's white. He's a total wannabeaner."