Refers to speech or behavior characterized by a banal, affectless disregard for the violation of proper taste and/or societal norms, generally driven by a belief that the traditional social order has been irreparably disrupted and thus certain actions that were once considered cringeworthy have become commonplace.
Derived from the literary genre pioneered by Chandler Morrison, which often involves characters who partake in reprehensible actions that are described with a flat tone of nonchalance, and that furthermore fail to elicit appropriate reactions from other characters present in the scene being depicted.

The phenomenon of having to come out as bisexual to the same person/people repeatedly because they assumed or hoped that your sexuality was a "phase." Refers less to the holiday and more to the 1993 Bill Murray comedy film in which the main character experiences the same day over and over.