Dia-logical

Do you ever wish you could use dialogue that people use in television, movie and book worlds? Some dialogue you just can't say in real life. Certain phrases aren't said in America like "who's she, the cat's mother?" which as far as I can figure out is the response when someone calls a woman in the room "she." I wonder why there isn't a corollary phrase for when a guy in the room is called he? I also like the phrase, "I'll bite," which I've tried to use (unsuccessfully) in everyday conversation.