I'm tempted to ask if you acquire semantics via nasal chemoreceptors or via absorption in the small intestine (and if the latter, I'm going to get a bottle of ketchup and take another pass at Kant). But I won't.

I will note that your semantic conception of pizza is likely very different from mine, or from my friend's, who doesn't like cheese. You may have a semantic conception of pizza, but I have no way of knowing that.