Spawniversary 

1. The celebration of your spawning
2. The celebration of the realization of your corporeal existence (see also: Corporealization Day)
3. Birthday

"HAPPY SPAWNIVERSARY, BRO! I got you a case of Laphroig 21."
"Holy ferkin' snit! That must have cost a fortune!“
“It's all good, I have a grove of money trees, and no kids."

Spawniversary by GuanPi6'r March 25, 2020

Scarniversary 

A celebration by survivors of domestic abuse to mark their day of liberation from domestic abuse.

Every survivors Scarniversary is different.

Scarniversary by Idama JP February 16, 2022

SEAnniversary 

The anniversary of moving to Seattle.

I can’t believe it’s been 7 years since you moved to Seattle. Happy SEAnniversary!

SEAnniversary by kaaali August 1, 2023

staniversary 

The yearly anniversary of the date when one started to stan an actor, artist, group, etc.

Tomorrow's my Stray Kids staniversary! I can't believe it's already been a year!

staniversary by stupidbitch15 November 7, 2020