2) If you don't know what a jib is you get promoted (see example 2)
3) A form of punishment (see example 3)
2. Person A - "I like the cut of your jib"
Person B - "What's a jib?"
Person A - "Haha, promote that man!"
3. "WTF??! Drop and give me 50 jibs!"
Skier: We were jibbin' all over the terrain park saturday.
To jib something is to duck out of doing it.
To be a jibber is to let somebody (maybe a friend) down.
To let down all your friends at the last moment is to be a jibbin git.
"I bet you ten quid he`ll jib the footy"
"He never comes to the footy anymore, he`s a right jibber these days"
"He`s rung & said he`s not coming, the jibbin git!"