What if this bitch ain't even pregnant, dog, could she be lying?
And she be crying cause he acting distant

from J. Cole – Lost Ones Lyrics on Rap Genius

Meaning

He’d like to rationalize his running away from his child or find a way to distance himself and he does this by raising doubts about the legitimacy of the child’s relation to himself. Even while making this serious point, Cole can’t resist a juvenile “bitch”/“dog” pun

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