Sam: What are you doing here tonight?
Diane: I'm having dinner upstairs with Frasier and his mother. She's a seafood aficionado, we think she'll like the bouillabaisse at Melville's.
Sam: You're having dinner with Frasier's mother?
Diane: You actually deduced I'm having dinner with Frasier and his mother when all I did was say it in your presence. No flash cards, no crib notes on your sleeve? Uncanny.