Gap increasing

You just know that you don't belong to the place as someone who used to live when you don't know local slang.Bam !!!!!!!!!!! That happened last night when I called a friend of mine in my city(Fortaleza).While we were chatting and stuff she said something I could not understand at first,then she asked me:You've never heard of that slang,have you?And the gap is increasing every other day.I don't know if is a sign that I live here and my Brazilian friends live in Fortaleza.I still find weird.