A really boring an monotonous task of entering mind numbing data into an antiquated computer system. May cause constipation, seizures, or delusions of sexy JewishAmericanPrincesses.
Fuckin shit man, I got another A to Z and Rebekah is starting to look hot.
Before Google Maps, we used printed maps and the largest brand name in the UK was A-Z.
This was a series of street maps of most British towns and cities; properly the Geographer's A–Z Street Atlas.
Colloquially all road maps were known as A to Z.