Irish Bobby appeared on “Who Wants To Be A Millionaire” and, towards the end of the program, had already won $500,000. “You’ve done very well so far,” said Chris Tarrant, the show’s presenter, “but you’ve only got one lifeline left, phone a friend. Everything is riding on this question. Will you go for it?” “Sure,” said Bobby. “I’ll have a go!”

“Which of the following birds does NOT build its own nest?
a) Sparrow
b) Swallow
c) Blackbird
d) Cuckoo?”
“I haven’t got a clue,” said Bobby, ”so I’ll use my last lifeline and phone my friend Billy,” Bobby called up his mate and told him the circumstances and repeated the question to him. “Hell, Bobby!” cried Billy. “That’s simple. It’s a cuckoo.”“Are you sure?” “Of course I’m sure.”