anniverseriable
Worthy of being celebrated (or otherwise commemorated) on its anniversary.
The day I left high school was memorable, but not anniverseriable.
fetus anniversery day
A funny way to say happy birthday to someone. Congratulating them on living another year past being a fetus.
Me: Happy fetus anniversery day mikey
Mikey: Excuse me?
Me: It's a funny way of saying happy birthday
Mikey: Excuse me?
Me: It's a funny way of saying happy birthday