"You can say that again!" - This common English expression is often misunderstood by non-native speakers.
"Break a leg" - Literal translation would be confusing, but it actually means "good luck" in performance contexts.
"It's not my cup of tea" - A polite way to say you don't like something.
"The ball is in your court" - Means it's your turn to make a decision or take action.
"Let's call it a day" - Suggesting to stop working for the day.