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.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"