The feeling that occurs when you independently have an amazing idea or inspiration and you assume it is completely original, but later on you discover that someone else, usually a great thinker or artist, discovered it before you. You are jealous at their having been able to receive fame and notoriety for it, but at the same time you are flattered that you could have the same thoughts as a famous individual.
"Joey, I have this amazing idea!"
"Yeah Frank? What is it?"
"That I should write a book about a man who wakes up and one day discovers that his body has changed from that of a man to a disgusting creature, such as a cockroach!"
"Dude, Franz Kafka already wrote a book like that."
"Damn it, oh well...I guess I'm jealattered."