Now stay in line, don't step on cracks
So you break her back I'm talking 'bout your mom
“Step on a crack, break your mother’s back”.
1st meaning: A$AP is careful where he is walking to be sure he can carry on so he will be able to break your mom’s back (Your mom will straight trip when she’ll notice the music you listen to (i.e. A$AP Rocky)).
2nd meaning: A$AP makes sure his music is great so everybody will listen to it. Even YOU, young kid, so your mother will go insane.
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