And fire up the engines, huh
And then they make noise
His toys are his beloved cars (not the other rappers usual toys/guns) that he mentioned through the whole song. When ‘Ye wants to create the bedlam he warms up (fire up) their engine, and finally make noise like all the sport cars do
Plus in the Runaway movie, he’s driving a sports car during the segment this song is playing in.
This could also be a callback to Everything I Am when Ye says
Haters start your engines, I hear ‘em gearing up
Kanye may be referring to the haters here, who just make noise and don’t do much else.
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