A Seismic Mimosa is a cup of orange juice with 4 pumps of hand sanitizer. These are usually made by Alcoholic Doodlgebuggers while not having access to alcoholic beverages in their natural habitat.

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.