beginner: somebody who is just beginning to learn something
[Early 17th century. Via medieval Latin, "squire" < Latin tiro "young soldier, recruit"]
tyro. Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. http://encarta.msn.com/dictionary_/tyro.html (accessed: July 10, 2009).
Bob was feeling a little worried and realized he needs to stop stretching the truth. Claiming to be an expert at something, when at best a tyro, is not always a good idea; especially when the pilot and co-pilot become incapacitated. Maybe he should not have told the flight attendant he had flown over 5,000 hours on a wide-body jet before. He wasn't exactly lying, but perhaps a computer flying game didn't count. Which button operates the machine guns again?