To be very excited and enthused about something that you do not fully understand. A mixture of confusion and enthusiasm.
Joe showed incredible levels of confusiasm when he expressed how excited he was about going out.. but didnt know where he was going.
Tom - "I cant wait to see that film!! its gonna be the best!"
Chip - "why?"
Tom - "I dont... know..."
Chip - "thats some confusiasm you are showing there..."