Annoy Squidward Day is celebrated on February 15 by fans of the animated series SpongeBob SquarePants in the United States. This day is a humorous reference to a specific episode where Squidward, the grumpy co-worker of SpongeBob, declares it to be Annoy Squidward Day in response to SpongeBob's antics. Fans have embraced this joke and turned it into an annual holiday, providing an opportunity to celebrate their love for the show and its characters. Typical customs may include playful pranks or actions aimed at annoying Squidward, reflecting the spirit of the character's exasperation. The day allows fans to express their creativity and engage with the show's themes in a lighthearted manner.