In a similar style to president trumps 2016 red MAGA hat, 2020 presidential candidate Andrew Yang's blue MATH hat has become a symbol of him and his supporters, the YangGang who have started using the blue hat emoji in their twitter usernames to aid in quickly identifying each other.

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.

used as “cap” which means a lie

Used to show that you or another person have autism because of the similarity to the “Please be patient I have autism” hat

It’s literally the same thing as the word cap no cap!