Learning slang from a different region is a language lesson too. Language is always moving.

Languages are not fixed objects. They are being altered constantly by the people using them, and slang is where you get to watch that happening in real time. A word from another region shows you a different solution to the same problem of being understood, usually carrying some of the history and humour of the place it came from. Calling it incorrect means missing the one part of a language you can see moving.

Learn the meaning and the origin of three expressions from somewhere other than where you live. Notice which of your own words would sound strange elsewhere.