They went up thinking they would never touch the ground
But we gon wish it ‘pon ‘em on the way back down
Here he is talking about the shooting stars which we wish upon their when they are falling (on their way back down).
It could be a double entendre as he is talking about airplanes, because airplanes actually “go up” when they take off the ground and the rider feels as if he will never touch the ground.
There’s also the likely chance that it’s a metaphor for celebrities, who rise up believing they’ll never be back on the same level as normal people, but Lu’s saying that they’ll be there to see them once their fame ends.
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