A Person who becomes overly enthusiastic about celebratory events: Birthdays, Christmas, Easter, New Year’s Eve, St Patricks Day, Halloween, Valentine’s Day, Pancake Day, Pirate Day, Australia Day.
Common behaviour characteristics include putting up decorations, spending excessive amounts of money on presents, wearing birthday sashes or badges, cooking special celebration food, setting up the Christmas tree on the 1st of December, wearing associated coloured clothes, singing Christmas carols. Even if this behaviour isolates them from the group they continue to try and persuade others to conform to their happy ways.
In extreme cases the 'Celebration Person' may develop 'celebration princess syndrome' (CPS), they will become extremely upset if variables of the celebration are not perfect. If an individual you know has CPS always ensure that you comply with their ridiculous demands. And beware because 84% will transform into a bridezilla.
Person 1: "Why is Emily making St Patrick's Day cupcakes?"
Person 2: "She is a celebration person."
Person 1: " Oh Sh*t we better make sure we get her a cake for her birthday, she might have CPS!"