Pockets so loud, got them bitches doin' adlibs
I'm goin' in, finna spazz out

from T.I. (Ft. 2 Chainz) – Loud Mouth Lyrics on Rap Genius

Meaning

Adlibs is used in music to enhance the sound of the vocals …its another layer of vocal usually in the form of repeating the lyrics mainly but not always at the ending of the bar …..2 chainz is saying he got so much money in his pocket he got bitches hollin' at him to check them. It also can mean he has so much money he got bitches eating each other out …a reference to fabolous “bad bitches” ….we’re fab talks about having 2 bitches “one rock da mic while da other 1 adlib”

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