A fruit and or a vegetable used as a masturbatory aid. Popping a hole in a grapefruit, apple, or any other large squishy fruit for male intercourse or a female using a carrot or cucumber.
Guy 1: This guy on Good Luck Chuck used a grapefruit as a passion fruit.
Guy 2: That's sick and I was gonna eat that.Boyfriend
: Hey babe. Why does this cucumber smell funny.
: Oh sorry that's my passion fruit/vegetable