My dad works nights, putting on a stone face
He's saving up so we can get our own place

from Childish Gambino – Outside Lyrics on Rap Genius

Meaning

His dad worked a night shift at his job to help CG’s family get their own place to live. Although he didn’t like working nights, he “put on a stone face”, meaning he maintains a stoic expression (poker face) so he doesn’t bring others' moods down (including his son). .

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