What does "au fait" mean?

Search: au fait

Why: In Eddie Izzard: Glorious:

Some people have black and white dreams. They're kind of cheapo dreams. You need to bang the set before you go to bed. And they're so vivid to us: you're there, and your grandmother's attacking you with a spoon, and the pope's playing the banjo, and you're totally au fait with it.

Answer: adj.

1. (usually foll. by with) fully informed (about)

2. expert [French: to the point]

Source: TheFreeDictionary

The More You Know: I think it was JK.