Feet of Grapefruit

Your feet are flavored like the puzzling grapefruit. Isn't the "fruit" part kind of redundant? But then, it's not actually a grape, so the "fruit" must be an important modifier. In this case, does "fruit" mean "but bigger, and more sour, with a rind on it?" Ponder that for a bit. And please don't lick your feet, we don't care how limber you are.