A rentahamster is a type of person. They will be your best friend. They are good public speakers, despite their stutter. They are good at cheating and lying. You won’t know you appreciate them until they are gone.

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.