What is Stage Five?
1.
To be the furthest limit point of a noun, pinnacle of seriousness.
Commonly used as the noun itself.
Girl: Why dont you call me as much, do you not want to hang out with me anymore?
Guy: Its not that, you have just become a stage five clinger.
or can be used as "stage fiver" as code when around the stage five clinger them selves to your boys/girls.
See