Restaurant culture is a world set apart, a tiny universe that operates on its own principles. It even has its own language. "Order up," "86" and "in the weeds" all belong to a lexicon reserved for those who are intimately familiar with the scent of pommes frites in the air. Whether you've worked in a restaurant during one desperate winter break, hustled tips throughout the entirety of your undergrad career, or are a career waiter, you know that once you you wait tables, you can never unlearn the things you know. And with knowledge comes tip. And tip well.

From the habits you've desperately tried (and failed) to break, to the small nuances you pick up when you dine out that go unnoticed by others, these are 25 signs you've worked in a restaurant.

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