Is this grammatically correct? What does it mean and can it be rephrased? “It’s been a rollercoaster”

Yes, the phrase "It’s been a rollercoaster" is grammatically correct. It is an idiomatic expression that means the speaker has experienced a lot of ups and downs, changes, or unpredictable events, often referring to emotional experiences or situations that have varied in intensity and circumstances. A few ways to rephrase this could include: - "It has been quite a journey." - "There have been many highs and lows." - "It’s been full of twists and turns." - "It has been an emotional ride." All of these alternatives carry a similar meaning, indicating a tumultuous or varied experience.