"Oh how rude!" or "That's so rude!"
It expresses strong disapproval or shock at someone's behavior, which is considered rude or inappropriate.
Here's a breakdown of the phrase:
* Ay: An exclamation of surprise, disappointment, or dismay.
* Que: "That" or "How."
* Grocera: Refers to someone who is rude, impolite, or boorish.
It's similar to English expressions like:
* "How rude!"
* "That's so inconsiderate!"
* "What a jerk!"