* Surprise: "Ooft, did you see that goal?!"
* Disbelief: "Ooft, I can't believe you actually ate all that pizza!"
* Pain or discomfort: "Ooft, my back is killing me after that workout."
* Approval or admiration: "Ooft, that car is absolutely stunning!"
* Empathy or understanding: "Ooft, I know what you mean. My cat does the same thing."
Essentially, "ooft" is a versatile exclamation that adds a playful, often humorous, tone to whatever you're saying. It's a very informal term, and it's most often used in spoken language, especially among young people.