Is a Grapefruit a Fruit or Vegetable?
Botanically, this is...
A Hesperidium!
(A type of fruit)
Culinarily, this is...
Grapefruit literally has the word “fruit” in its name. It looks just like the other citrus fruits. It is both sweet and sour, both of which are uncommon for vegetables. Clearly it is just a fruit.