بچه ها / bacheha
Now bacheha really means children, but it also has a slang meaning. Usually, Iranians call their group of friends bacheha. It's kind of like saying the gang, the guys. For example: "Last night we went to the movies with bacheha." or "Let's call bacheha and go out!" or "Bacheha, let's go to that new restaurant!"
When you use bacheha exactly who you are talking about is already known to the person you are talking to. That's why it goes well with yesterday's word khodemooni because you are talking about your closest friends.
So what do you usually do on the weekends with bacheha?