Well, I was also wondering if Tinku had any meaning. :)
Jiya is heart, but I think Tinku is just a random word. Maybe tinku can be understood as twinkling, enjoying or something like that.
Actually cunt looks like mouth so double meaining brushing of cunt (even she shows the action)with love by beloved . Ishq da manjan ghise hai piya (basically rubbing of cunt out of love). Tinku jiya means itchy heart longing for love (physical)
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