It would be an adlib in the realms of pop/rnb music where the singer adds a few small vocal ‘licks’ or a riff here and there to beef up the track. hip hop adlibs are usually just exclamations ‘whooo’ ‘ON GOD’ ‘flex’ etc etc

I know they at the crib going crazy
Down bad
What they had
didn't last
Damn baby

damn which song was it? can't see the og message