When old Butt-Head dreams of his perfect family, he has 3 children named Butt-Head Junior, Butt-Head Threenior, and Butt-Head Fournior, who all look like miniature versions of Butt-Head as a teenager. Butt-Head Fournior is visibly older than either of his brothers, despite his name indicating he is younger. As this occurs within Butt-Head's mind, it can be explained as Butt-Head simply being stupid and having a poor imagination.