My first "big" airplane was a 737-300, I had 7 years sideways as a F/E then finally upgraded to the right seat.
Initial Operating Experience with a check airman was a total blur as questions about the plane and policies were coming thick and fast and was focused on the task at hand, that is until I saw my ugly mug in the reflection of the terminal building window in Jacksonville FL on the second day of the trip .
I realised then I had this huge stupid grin on my face........