Hamcart Runner and Helenstacy Winner were to be married, but were arguing over whose surname to take. They decided that they would each stay with their original last name, have two children, and one of them would have the last name "Runner" and the other would have the last name "Winner." Their first children were twins, Homestar and Homeschool. The twins' only differences at birth were that Homestar had an underbite and Homeschool had an overbite. By a streak of luck, the twins were selected for one of those twin study programs. They would separate them at birth, then, 18 years later, they would bring them back together and see how much they had in common. Well, the theory of twin alikeness was screwed because these two were exact opposites. Homestar came in wearing a hat and a red star shirt and was apparently a star athlete but a total idiot. Homeschool came in with no hat and blue speech bubble shirt and was apparently an academic genius that was a master at the arts but sucked at sports. Now the twins hang out a lot, but we never see them together because they each think they're an embarassment to the other.
I thought that you said that they are fraternal twins. -
CE5