1. A character in Chapter 1 of the first of the "Dime!" series of Spanish high school textbooks who acts rather shadily toward a girl in the library.
2. Anyone who says repeatedly, "Me llamo Beto...Beto Chavez."
3. Any sort of sleaze-wad.
"I wish that really pushy guy would leave those poor girls alone and stop being such a Beto Chavez."