Cringeposter

(noun)
noun: cringeposter; plural noun: cringeposters

One who cringeposts.

1: Jeez, what's happened to this account?
2: They've become a cringeposter.

Cringepost

(noun)
noun: cringepost; plural noun: cringeposts

A post that induces a strong cringing sensation in its viewers, intentionally or otherwise.

(verb)
verb: cringepost; 3rd person present: cringeposts; past tense: cringeposted; past participle: cringeposted; gerund or present participle: cringeposting

The act of creating a post that induces a strong feeling of cringe in its viewers. Often used as a way to funnel followers to a new account by poisoning the original with cringe.

Poster: *posts cringe*
Commentor: cringepost