"I think I know who it… I'm not 100%... no, I haven't got a clue. I'd like to phone a friend Regis, just to be sure."
Regis: "Yes. Who, Barbara, do you want to phone?"
Barbara: "I'll phone my friend Maggie back home in Birmingham."
Maggie (a blonde): "Hello..."
Regis: "Hello Maggie, its Regis here from Who Wants to be a Millionaire. I have Barbara here and she is doing really well on $500,000, but needs your help to get to a Million. The next voice you hear will be Barbara's and she'll read you the question. There are 4 possible answers and only 1 correct answer. You have 30 seconds to reply -- fire away Barbara."
Barbara: "Maggie, which of the following birds does not build its own nest?
Maggie: "Oh gees, Barbara that's simple...It's a cuckoo."
Barbara: "You think?"
Maggie: "I'm sure."
Barbara: "Thanks Maggie." (hangs up)
That night Barbara called round to Maggie and brought her down to a local bar for a celebratory drink and, as they were sipping their champagne, Barbara turned to Maggie and asked: "Tell me Maggie, How in God's name did you know that it was the cuckoo that does not build its own nest?"
Maggie: "Listen Barbara, everybody knows that a cuckoo lives in a clock!"