It literally means go fuck youself in papiamento, the national language of Aruba.
Person 1: I told your mom about your report card
Person 2: bai hunga pa cull
It's a form of saying stop fucking with me or you're fucking with me in papiamento, the national language of Aruba.
Another form: Stop di hode
Person 1: Dude I just won the lottery!
Person 2: Stoi hode!