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.

a female who likes going to her boyfriends basketball games, she always buys me food because I am broke, she is really good at AP Government, and is somewhat addicted to her phone, she also likes Max Sranske, ben's cat

p.s. she likes trolls too