An exhibitionist who goes too far, i.e. spams private groups with their shares, shares kink without others' consent, makes less secure exhibitionists feel mediocre
"Bitch is posting so muchgonna get banned for being an extrabitionist!"
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!