Karen, his wife, cheated on Brooklyn for years now, and he just found out the person she was cheating on him with was his brother, and he came to Marvin's house with some alcohol he was drunk

You were Marvin's older sister/brother Jeffy was playing with Junior in his room

Rose walks by Rose: Marvin, is that the guy who has ALL the jobs?

Marvin: Yes, but anyway, Brooklyn, you can sit my sister/brother in the living room

Brooklyn sobs Brooklyn: Thank you Marvin