Annoy Squidward Day
Annoy Squidward Day is a day that is mentioned in the episode "Employee of the Month" as part of a joke. It is first shown on a calendar.
History
It is supposedly held annually on January 15. Squidward is bothered, so when he is asked what day it is today, he answers, "Annoy Squidward Day?" SpongeBob laughs and says that "Annoy Squidward Day" is on this day, and points to the calendar.