bffersary
The anniversary of being best friends with a person.
Me: Dude! Do you know what today is?
BFF: Uh, no.
Me: It's September 6, 1977! The day we met in first grade! It's our BFFersary!
BFF: Awesome!
BFF: Uh, no.
Me: It's September 6, 1977! The day we met in first grade! It's our BFFersary!
BFF: Awesome!