2.Also a friendly way to receive attention.
3.Also a way to inquire about material kept oblivious to you.
2. Feeling socially abandoned Christopher yells out ,"S'goin on?"
3. A group of friends gather around to keep a secret that might make their mutual friend feel differently about them until given mutual friend surprisingly shows up and becomes suspicious proceeding to inquire about the material shared at the gathering or "S'goin on ?, guys "