Bootyversary 

When someone has had the same booty call for a year

Bro 1: "Dude it's my bootyversary today. Wanna go for a beer?"
Bro 2: "It's been a year already?! You gotta renew your pathetic life, bro"

Bootyversary by UT+Per7 September 29, 2014

Boobaversary

The anniversary of one getting their Boobs enhanced as described by the Atlanta Chive

Roxys Quote~ the shenanigan celebration of my "Boobaversary" continues into this weekend

Boobaversary by AtlantaChiveguy September 3, 2013