Baby, who you callin' soft
The girl begins to challenge his drug affiliation by taunting him with the drugs that she does, shown in the next two lines. She tries to show that she can relate to him so The Weeknd could fall for her.
Also, The Weeknd is from Toronto… People from Toronto use a lot of slang. “Soft” is slang for pussy, basically,
Who you callin' a pussy?
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