September First
To break up with one's significant other after being miserable in the relationship for years.
"Dude, did you hear the news? I finally September Firsted the shit out of my girlfriend"
"Bro, it's September 1. Are you going to September First the gf?" "Yeah man, next September 1."
"Bro, it's September 1. Are you going to September First the gf?" "Yeah man, next September 1."