unbirthday

Statistics prove that you have one birthday, just one birthday every year. But there are three hundred and sixty-four unbirthdays. And this is a reason to gather and cheer.

by enken January 10, 2003

unbirthday

all the days besides your birthday in a year, referred to in Alice in Wonderland also

HAPPY UNBIRTHDAY TO YOU!!!

by saxaphoner September 20, 2009

unbirthday

the day of a sibling's birthday where you also receive presents/money in order to keep the peace.

Jamie: Did your brother have a nice birthday?
Alexandra: He enjoyed it, I also enjoyed my unbirthday.
Jamie: How much did you get?
Alexandra: £230 and an iPad.
Jamie: Tidy.

by shr3k April 17, 2011

unbirthday

When you acknowledge that it is, indeed, the date of your birth, but refuse to acknowledge that you have aged.

Even though it happens to be my eighteenth birthday today, I've decided not to become an adult.

by westindiangirl December 17, 2009

Unbirthday

the opposite of your birthday; the day of your future death

Without knowing, every year we pass our unbirthday.

by sphinxy January 12, 2016

Unbirthday beatings

Unbirthday beatings are equal to 100 minus your actual age.

These can be given out on any day that is not your birthday, but only once per month per person.

xanthina gives you unbirthday beatings

by xanthina July 04, 2009

Unbirthday

Any day that isn't technically your date of birth.
Refers to Louis Carroll's Alice in Wonderland, where there Mad Hatter and his crew celebrate such a day.
Can also be utilized for no damn reason except to celebrate..

Today is my Unbirthday, three and one.

by REBel Siren January 03, 2023