Questions about example sentences with, and the definition and usage of "Dissin"

A: Do you have more context for this?

I assume this us a shortening of “dissing”. When spoken many people drop the “g” at the end.

Dissing, to diss = to discredit or speak disrespectfully about someone.

“The students dissed the teacher after class for giving them extra homework.”

“The rapper made a diss track about their rival.”