Black-flakking is the the act of tricking others into opening a link to the much talked about music video "Friday" by Rebecca Black. This trick is very similar to rickrolling. To be Black-flakked is to be the victim and the act of Black-flakking is done by the predator/troll. The prank is considered to be funny because the song is horrible in many, many ways.

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.