2. The most awesome person in the world.
3. the coolest woman you will ever meet.
2. "Wow, that girl is cool; her name must be jovie."
It can also be used when someone does a prank or goof that you wish you would have thought of first.
Expressing jovie to a friend conveys that you are just as funny as them and also conveys a respect for their jokery or goofery.