When you forget the day of the week,and suddenly,Rebecca Black's song "Friday" creates a brainworm
in your mind.This can be good or bad,considering that it might not be Friday yet...
This can also be called a TGIF moment.
Harold forgot the day of the week.Then,Rebecca Black took over his mind with her incredibly annoying song "Friday".
Harold:It MUST be Friday!
~this has been a Rebecca Black Moment!~