1. "Excellent" or "Great":
* "That film was mean!" This means the film was really good.
* "You got a mean haircut!" This means they really like the haircut.
2. "Nasty" or "Aggressive":
* "He's got a mean streak." This means he's capable of being cruel or violent.
* "Don't get on the wrong side of her, she can be mean." This means she can be unpleasant and aggressive.
3. "Miserable" or "Unpleasant":
* "The weather's been mean all week." This means the weather has been bad.
* "That's a mean trick to play on someone." This means the trick is cruel or unkind.
4. "Strong" or "Powerful":
* "That's a mean engine!" This means the engine is very powerful.
* "She's got a mean right hook." This means she can punch hard.
It's important to consider the context of the sentence to understand what "mean" means in British slang.
For example, "That's mean" could mean "That's great" or "That's nasty" depending on the situation.