First usage I can think of is "boppers" in Paul Wall & Kanye West's 2005 "Drive Slow." It'd be a hell of a coincidence if they weren't related. In Wall's oeuvre it just seems to denote "the women I'm interested in" without much in the way of connotation.

> The disco ball in my mouth insinuates I'm ballin' > I'm leaning on the switch, sitting crooked in my slab > But I could still catch boppers if I drove a cab

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