The Cheat's Gold Tooth
From Homestar Runner Wiki
One of The Cheat's most well known features is the large gold tooth on the right side of his mouth. It is apparently part of his physiology, according to a medical diagram of The Cheat from big white face. When he is seen grinning, his gold tooth is revealed with a shing! noise. In The Cheat's character video, he seems hesitant to show it, but eventually does.