The feeling/emotion of utter joy and surprise when someone you look up to deeply, notices you and your existence.
The person you look up to doesn't necessarily have to be well-known, popular, or famous. just someone you adore and look up to in a heroic sense.
Person 1: "Oh my gosh! this Youtuber I watch just replied to my comment on their video!"
Person 2: "That's so cool! I bet you feel so Super Mega Swag Happy Swag right now."
Person 1: "I really do! I couldn't be happier."