Question: what does it mean when someone wears a red string on their wrist?
Answer: Wearing a thin scarlet or crimson string (Hebrew: חוט השני, khutt hasheni) as a type of talisman is a Jewish folk custom as a way to ward off misfortune brought about by the "evil eye" (Hebrew: עין הרע). The tradition is popularly thought to be associated with Kabbalah and religious forms of Judaism.