Didja mean the WWJD, Blondie? It stands for "What would Jesus do?". It's assumably a question that every Christian is supposed to ask themselves as they go though the everyday events of their lives.
i.e.--Would Jesus use Snuggles Fabric Softener or Downey?
i.e.--Would Jesus listen to the Lex & Terry morning show on the radio during the commute to work, or Johnboy and Billy?
...and so on.