I used to wake up in a bed between my mom and aunt

from Childish Gambino – Outside Lyrics on Rap Genius

Meaning

Due to the lack of money, it can be implied that CG and his family may have lived with extended family. The upcoming “he’s saving up…” line refers to the fact that they did not have their own place which explains why he is waking up next to his aunt. They live with her. He used to “dream every night” and some nights he would have bad dreams and go get in bed with his mom, (who didn’t? and this is CG showing his vulnerable side again) which explains why he is “waking up” in between them.

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