I mean she right though, 45 like a light-bulb
And I could've died like my iPhone,

from Childish Gambino – Life: the biggest troll [andrew auernheimer] Lyrics on Rap Genius


In others words she’s bright “like a light-bulb”. 45 refers to the wattage of the bulb.

Also a reference to a .45 caliber handgun, which is fitting with the following line about how he “could’ve died” but kept going (deciding not to pull the trigger).

“I could’ve died” refers to his attempted suicide.

“After I came off tour, we went to Australia and I was just super depressed. I mean, I tried to kill myself”

He spoke about this in an interview with Noisey, which can be read here.

This also relates to the BtI screenplay, when The Boy goes to his mansion and sees four dudes outside his front door waiting for him with “45s.”

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