More prepared to let off anything substantial
(If I had no rhymes and my planes was cancelled)
Picture that, before you give your bag and expose it

from GZA (Ft. Justice Kareem) – Groundbreaking Lyrics on Rap Genius

Meaning

‘let off’ is connected to ‘planes’ cuz planes r let off from the airport into the sky. by planes gza is probably talking about a rapper’s delivery because planes travel in the wind and in ‘general principles’ gza calls his voice ‘the force of wind’

also ‘planes’ could be a reference to ‘mental plane’ which is a world made up purely of thoughts. sometimes when people write they forget about the material world and they become absorbed in their own world of thought.

‘picture that’ is an imperative from gza towards his competition to create picture like lyrics with lots of imagery. ‘before you give your bag and expose it’ ties in with the plane imagery cuz in an airport people have to give in their luggage to security staff who check it. the security staff represents gza who is going to examine their cameras (vivid lyrics) and decide whether he should take these cameras on his plane

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