Lane Kiffin isn’t just a head football coach again. He also fancies himself a philosopher, apparently.

On Thursday, Kiffin took to Twitter to share some thoughts about tomatoes. While commonly referred to as a vegetable, tomatoes are actually members of the fruit family. With that in mind, Kiffin has a theory about ketchup.

Whoa.

If you wanted to counter Kiffin’s little theory, you could argue that people make smoothies using vegetables all the time. Although, the Dictionary.com definition of a smoothie is “a thick, smooth drink of fresh fruit pureed with milk, yogurt, or ice cream.” There’s also the fact that — never mind, we’ll let Kiffin have his moment.