This phrase is used when someone, usually of low social status or with little elegance, suddenly acts in a sophisticated or pretentious manner. It's a way of saying 'someone is trying to be something they're not'.
Examples
- Spanish: Desde que se ganó la lotería, a Juan se le subió la gata a la batea, ahora solo quiere comer en restaurantes caros.
- English: Since he won the lottery, the cat climbed up to the tray for Juan, now he only wants to eat in expensive restaurants.