The floating odor found on an airplane, typically the odor emanating from the lavatories shortly after the dinner course served on a long flight.

Origin:
German: Luft, air (from Middle High German, from Old High German) + Waft

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.