You know america is dumb when. . Ton know your country is dumb when they say pizza is a vegetable, even though a tomato is a fruit. So, the answer to the question is that a tomato is technically the fruit of the tomato plant, but it's used as a vegetable in cooking. -Oxford Dictionary You know america is dumb when Ton your country they say pizza a vegetable even though tomato fruit So the answer to question that technically of plant but it's used as in cooking -Oxford Dictionary