I got five on her like Ben Folds
He has his hands all over her.
Ben Folds is the lead member of a band called Ben Folds Five. (This line might be working against that real nigga feelin'). Ben Folds played the piano and thus has extremely dextrous and talented fingers. Gambino is using his dexterous and talented fingers for something a little more provocative.
The line could also mean that he has $5000 on her, which that would be five racks or “Ben Folds,"since Ben Franklin is on the $100 bill
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