Answering diplodocus won't get you much further either. The logic-defying answer to that is: "So you're a sexist?"
The dinosaur tactic, a favourite of City employers because the answer is almost always "T rex", is part of a craze for throwing bizarre questions at candidates to see how they react.
The technique - designed to distinguish the capable candidate from the exceptional at a time when a quarter of recent graduates are unemployed - originated in California's Silicon Valley.
Google, which is based there, is renowned for its intense interview process, with 50-page dossiers sometimes being prepared for a potential employee.
One recent question a recent candidate was asked was: "You are stranded on a desert island. You have 60 seconds to choose people of ten professions to come with you. Who do you choose? Go!"
Computer manufacturer Hewlett-Packard prefers questions such as: "If Germans were the tallest people in the world, how would you prove it?" - a reference to the first line of their national anthem, Deutschland Deutschland uber alles.
The idea of extreme interviewing is to see how quickly job-seekers think on their feet and one of its pioneers was the late Steve Jobs, co-founder of Apple, who put interviewees through their paces.
Dealing with a candidate he considered dull, Jobs launched into a chicken impression, flapping his arms and clucking to judge his reaction.
David Moyle, a headhunter with the Eximius Group in London, admits he has used the dinosaur question to recruit.
He said: "We are trying to give candidates an opportunity to show their personality, rather than just showing how they perform in an interview."
Genuine questions asked of potential employees include:
"If you were a biscuit, what sort would you be?"
"Name five uses for a stapler, without the staples."
"Name me three Lady Gaga songs."
"With a four-minute hourglass and a seven-minute hourglass, how can you measure exactly nine minutes - without taking longer than nine minutes?"
- DAILY MAIL