When you receive oral sex as you're scuba diving or snorkeling with whale sharks. In order for it to be a true Swallow the Jonah, you must reach full climax and your partner must swallow most, but not all of your discharge. The left over is obviously for the whale sharks.

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.