shackiversary 

Annual celebration of living together.

"Matt and Lacy are celebrating their seven year shackiversary on Friday."

shackiversary by skinnyb November 12, 2009

shagiversary 

The anniversary of a time you had sex with someone

It’s the shagiversary today
Happy shagiversary

shagiversary by Absdarlen August 6, 2024

shagiversary 

The anniversary of a time you had sex with someone

It’s the shagiversary today

Happy shagiversary

shagiversary by Absdarlen August 6, 2024