shitpost

[ shit-pohst ]
/ ˈʃɪtˌpoʊst /
Slang: Vulgar.

verb (used without object)

to post off-topic, false, or offensive contributions to an online forum with the intent to derail the discussion or provoke other participants: The moderator has banned the accounts that were shitposting about politics. Compare troll1(def 7).

noun

a contribution to an online forum that is off-topic, false, or offensive, with the intent to derail the discussion or provoke other participants.

Origin of shitpost

First recorded in 1995–2000; shit + post1