One can say "get back home" or "went back home" to talk about going back home after hanging out with friends.
In response to this question: Who do you usually like to hang out with? I say: Back home, I used to hang out with my collage colleagues, but nowadays, I usually go out with my work colleagues
"back home" refers to my country and the listener know that I am a foreigner. Is this a correct usage of the phrase. Is it idiomatic?