He's goin' down like my living room elevator

from Childish Gambino – Put It In My Video Lyrics on Rap Genius

Meaning

Instead of simply saying a hater is going down, Glover lets us know he has an elevator in his living room. An “explainabrag” as Glover’s character on Community would say.

If you’ve read this far you should know — Troy doesn’t do explanations while bragging—Britta does explainabrags.

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