We fly, I mean so fly we need a whole wing...

from Wiz Khalifa – No Sleep Lyrics on Rap Genius

Meaning

They’re so high that they would have needed a whole wing to fly straight

The “whole wing” is referring to a whole wing of a hotel. Normally one would just buy a room for a night but Wiz is so fly he buys a whole wing of the hotel for him and his gang

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