I would hear gente say man that fool looks like a surenos.I would look around saying who you referring too.They would point that vato out.I would laugh and tell them that vato is from the north.They judged him by how his appearance is.Sometimes when a person is in a Barrio they never been before , it may look like some may be from the south when they really aren't or even Paisas.I haven't been to Salas in a while,but it's just something to think about if your in a Barrio in another city.