Have you taken apart and reassembled every bike you own out of curiosity? Are you working at a bike shop dealing with all types of broken velocipedes? Do you buy the frame and group separately, just so you can put the two together?
This weekend the Bicycle Film Festival Block Party will play host to the most demanding test of a mechanic's abilities, courtesy the folks at West Town Bikes. Contestants will be required to diagnose, fix, and then test ride a prepared bicycle against the clock and other contestants. To win the prizes, you need the most points, and to get those you need to be the fastest AND most thorough. All tools required will be supplied in a multitool, but you're more than welcome to bring your own set.
$10 gets you entry, and space is limited so please let me know soon at email@example.com.