Exiversary 

a celebration held on the anniversary that you had with an ex in which you do things for yourself, most likely the things your ex never did to celebrate that day. For example go out to dinner, buy yourself flowers,or any other self pampering.

Girl: This year for my exiversary I am going to get my nails done and go out to dinner.
Boy: Great first round is on me!

Exiversary by Miss Jeanine April 2, 2009

Sexiversary 

The date on which two people first had sex.

He was invited out for a drink after work, but he knew that since it was their sexiversary and she would be expecting him to be on his game, he declined.

Sexiversary by Kate Charlton June 18, 2008

Sexiversary 

The date on which two people first had sex.

He was invited out for a drink after work, but he knew that since it was their sexiversary and she would be expecting him to be on his game, he declined.

Sexiversary by Kate Charlton June 19, 2008

exuversary 

Sarcastic term referring to The date in which you and a previous significant other made it official

Ricky messaged his old girlfriend on the eleventh of november to tell her happy exuversary - rickys a dick

exuversary by wittyperception November 9, 2014

Endiversary 

The date in which two friends or a couple stop talking or have ended their relationship.

“Our Endiversary is on November 20th”

Endiversary by Mcpmachine 25 August 3, 2022

sexiversary 

The same as an anniversary, but for the first time you ever have sex or fo the first time you ever have sex with the person you are currently dating, married to, etc.
(if your first relationship is when you first had sex, then it would be a double entendre)

1. the 12th this month is my sexiversary for the first time I ever fucked someone, but the 10th of next month is my (girlfriend's/boyfriend's/spouse's) and my sexiversary for the first time we've ever had sex.
2. yesterday was my (girlfriend's/boyfriend's) and my sexiversary.

sexiversary by obamapproved September 11, 2009

Endiversary 

Opposite of an anniversary. It's the day you either celebrate (or mourn, depending on your outlook of the situation) the ending of a relationship. Causes of celebration include the end of a marriage from a cheating whore. Causes of mourning is when the relationship ends abruptly and you didn't want it to.

January 30 is my endiversary from my ex-wife! It's going to be a great day! We'll all go out and get hammered to celebrate!

Endiversary by superslacker87 May 29, 2009