And if you pillow talking with the women that are screwing you
Just know that she gonna tell another nigga when she through with you

from Drake (Ft. Jay Z) – Light Up Lyrics on Rap Genius

Meaning

Let this be a lesson to all my philandering heterosexual men: sleeping around AND keeping these same women as your confidantes is a bad idea; if she’s having casual sex with you, then she’s probably having it with other dudes, too

Pillow talking is when you converse with a woman after intercourse. It is usually very personal..so don’t do it.

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