Movies
Benjamin is nobody's friend. If Benjamin were an ice cream flavor, he'd be pralines and dick.
— Garth · Wayne's World

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A deliberately crude put-down. The speaker declares a third person friendless, then sharpens the insult by imagining him as an ice cream flavor, pairing a sweet-sounding name with something unpleasant. The comedy comes from the mock-menu format, where a personality gets summed up as a disgusting dessert.
Context reviewed