Ultracrepidarian
I had just been thinking, considering I'm a useless old PITB, preternaturally shy, even self-loathing, why do I keep tossing comments out as if I think anybody wanted to read mine? What compulsion motivates my manic public displays of my foolishness, ignorance, and social maladjustment?
Then I discover.. I'm ultracrepidarian.
Well, crep!