A girl is supposed to have a meeting with her boss at his office. He has the kind of office she has fantasized about. She thinks, if I were alone, I would've taken a selfie to send my friends with the caption "Mama's home."

What does it mean "Mama's home" here?

Thx in advance!!

Question

A girl is supposed to have a meeting with her boss at his office. He has the kind of office she has fantasized about. She thinks, if I were alone, I would've taken a selfie to send my friends with the caption "Mama's home."

What does it mean "Mama's home" here?

Thx in advance!!

Answer

She's calling herself "mama." She thinks she deserves a fancy office, so she's calling her boss's office "home." In essence, she's saying, "Look at me! I'm in the office that I deserve!"