To have good judgement of people and things, of what is right and wrong, of what is okay and what is not and what type of people are to be trusted and the people that are not.
Now obviously you cannot always guarantee your judgement is correct, and sometimes I'm not but when it comes to people I tend to be a good judgement of character, always foreboding their next step, knowing what they will turn out to be like, not by guessing but by years of trusting and watching others it's become really easy for me to know what a person is like as soon as they speak, now obviously I give them a chance to prove me wrong, and I'm not often biased which is another good thing but I do keep a close eye on these peeps. I wouldn't say I'm street wise though, I still get fooled by others without knowing, but I know people when they speak,their characters scream out to me. After all I've seen it for years, you just watch and learn and then you avoid.