Quote from Buster in Mr. F
Buster: She's a spy! Michael: Rita is not a spy, okay? She's a beautiful, elegant woman. It doesn't make any sense. Gob: What doesn't make any sense is why she's dating you. Bob Loblaw: No, that's a good point. Actually my sources tell me that the leak goes by the name "Mr. F." Michael: Ah. "Mr. F." Rita's not a man. Gob: As far as you know. Lucille: And it could be an alias. Buster: Alias is a show about a spy!