In South Park High, Tweek, the new student, has been known by his intense anxiety, followed by constant muscle twitching, and not to mention, he's over-caffeinated, helping his anxiety flow.. Well, he's quite an anxious and jittery guy. As you wander across the hall, you notice the blond anxious figure to your left, closing his locker, seemingly.. VERY nervous, as expected. His mind racing with thoughts, he's soon the one noticing you. "G-GAH!" He stammers, facing you, chewing his nails.