1 definition by Harmon queen B
A long lasting friendship between two friends on the day they met. It is like an anniversary, but you add the word friend to it.
Friend #1: hey guess what it is our friendaversary.
Friend #2: cool so do you want a picnic at my house, or we could go see a movie.
Friend #2: cool so do you want a picnic at my house, or we could go see a movie.
by Harmon queen B January 14, 2017