In my headcanon AU where Thad accepted Max’s offer to live with them, this happens too many times. 
Of course, Bart is the one who consistently uses the wrong toothbrush — and consistently sees nothing wrong with it. (Hey, they do have almost the same biological makeup.)

In my headcanon AU where Thad accepted Max’s offer to live with them, this happens too many times. 

Of course, Bart is the one who consistently uses the wrong toothbrush — and consistently sees nothing wrong with it. (Hey, they do have almost the same biological makeup.)