When I was a child, I used to dream up scenarios in which an entire group was in some sort of dire jeopardy, and only I could save the day through the application of some obscure knowledge or skill.
One of those things was knowing the correct spelling of Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.
I must confess to being at least a little disappointed that I've never been able to save anyone with this knowledge. ๐