Not an index, but a Trope Trope: When a trope is either so played out, so stupid, or so racist/sexist/whatever, that seeing it makes some portion of the audience go berserk. Wall Bangers are made of these. Part of the death cycle for a trope; any trope that qualifies is already at least close to becoming a Discredited Trope. Sometimes this is due to Values Dissonance making a trope obsolete. Continuing to use such a trope when the underlying morality behind it has been discredited is sure to get some annoyed reactions. No examples, please. This article defines the term.