Clearly they had to get the perfect character. I'm guessing simple drama skills were required and I am fairly sure that callbacks required to complete a screen test to show their compatibility with...
They don't "mean" anything, other than the replacement of the normal words that appeared in the original line. Are you thinking of this... "Come to the dark side" it's star wars language, look it up....
According to Wikipedia, the air date for this Family Guy episode is to be announced. Also, Wikipedia states that Something, Something, Dark Side is an hour-long Family Guy episode which is slated to...