A zefron poster makes a bosshorcrux in AVPM. It is also one Harry Potter, Ron Weasly, Dumbledore and one Draco Malfoy's favorite chistmatic humanitaian. It is deeply rivaled by umbridges talor launtner poster.
Ron: THAT IS A BOSS ZEFRON POSTER!
and....
Dumby: He just seems like such a chistmatic humanitaian
and....
Ron: Let's take this bit of garbage down! (atempts to take Talor Launtner)
The malodorous bouquet emanating from the back passage of an unkempt individual. Often noted by novice health professionals.
Novice: When I first examined him I felt oddly unwell. I would never have expected such a well presented gentleman to have posterior funk.
Senior: I think you mean posterior flank!
Poster commonly designed for use in schools and offices that generally consist of a photograph centered in a rectangular frame with black background, a title in large text and a description in smaller text.
This kind of poster has been repeatedly parodied and it's a commonmeme along imageboards.
A "Serial Poster" is typically a Facebook addict and a narcissist who compulsively will add a new post about their self every hour or less. This is for the purpose of validating their own importance to a dwindling audience who is increasingly censoring them as their enthusiasm fades away with each new self absorbed post. The Serial Poster also will have a core group 3-6 unconditional fans who will "Like" indiscriminately each post that is made regardless of it's pertinence or relevance to their own opinions.