Homestar Runner is a web cartoon that is animated in Flash. It started out in 1999, and still has a huge fanbase today. However, some "toons" on the website were left unreleased/unfinished. Among the unfinished ones is "Those Darn Cousins", made in 2000/01.
The plot involves Preshy and Rafferdy, Homestar's cousins, visiting him. They act like angels around other people but torture Homestar when no one is looking. The unfinished short can be found on the video to the right. It is unknown if Matt and Mike Chapman (the creators of Homestar Runner) will finish it.
Why Come Only One Girl
"Those Darn Cousins" starts at 1:01