What is sweetback?

Sweetback: The true definition of a sweetback is a male gold digger,a kept man as mentioned in the book Invisible man by Ralph Ellison.

Guy is a sweetback. Lady pays the rent but his only love is cold hard cash.

sweetback - meme gif

sweetback refers to a dude who is too smooth and fresh to go by any other, less respectful, term.

Shit, sweetback, you be smoove with the bitches!

Don't slip that girl your sweetback, she's got the clap!