* Tough and resilient: This is the most common meaning. It implies someone who can handle tough situations, doesn't give up easily, and can bounce back from setbacks.
* Bold and confident: It can also refer to someone who is brave and outspoken, not afraid to speak their mind or take risks.
* Rude or disrespectful: In a more negative context, it can mean someone who is arrogant, abrasive, and lacking in manners.
Examples:
* Positive: "That kid has a lot of crust. He fell down during the game but got right back up and kept playing."
* Neutral: "She's got a lot of crust, but she's got a good heart."
* Negative: "He's got so much crust, he just walks all over people."
The specific meaning will be clear from the context and the tone of the speaker.
It's important to note that this phrase is not always considered polite, and it's best to be cautious about using it yourself, especially with people you don't know well.