a "yoldie" young person who identify themselves as older and more mature and prefer to stay home on a Saturday night and watch Netflix rather then party, ages: 20-30
-Hey wanna go party tonight ?!
- nah I think I want to stay in
- GOD your such a yoldie!
A term originating from the Central Western NSW region specifically dubbo used as an expression of encouragement or affirmation of something positive often used in regards to sporting or social events.
John-Mate we won the grand final
James-Yoldi!!!