Ncmsl
A shortened version of "Undincamisile", a Xhosa term to express shock. Undincamisile can also mean "you have kissed me, you kissed me, s/he kissed me", which is not related to the definition we are talking about here.
Girl 1: She has already moved on.
Girl 2: For real? It's only been 2 weeks.
Girl 1: Dead serious.
Girl 2: Ncmsl
During the people
Is a general term used to refer to "around people" or ween there are people present.
Imagine, they were busy kissing during the people.
Gun Dubula
A Gun Dubula is a person in Kasi who carries a gun and shoots people (trigger happy).
Do you remember that Gun Dubula who jumped the school fence and shot a rival gang member who was writing exams?
Derogatory
Showing a critical or disrespectful attitude.
she keeps telling me I'm fat and she is always making derogatory remarks.