Sister Aunt

When your mother starts having babies before your granny stops having babies, and now you are 3 years older than your aunt, but you're both raised like siblings.

Mama if you get pregnant now, my child will be a sister Aunt.

bumfriend

A man who has no job, vehicle, home, or money but leeches off of his girlfriend in their relationship.

Rebecca's bumfriend has no ambition and is pulling her down.