Airline pilot of Australian origin that actually knows it all, and is happy to remind you on your lack of knowledge, or his level of expertise .
Often found in preflight briefing rooms whilst the rest of the crew have already departed.
Many have graduated magna cum lauda from the Uppercumbucca Flight Acadamy.
I had a great sim session with an Austranaut, he kept correcting the instructors mistakes, no pressure on me.
The captain was in touch with his inner Austranaut , everyone fell asleep during briefing.