Definitions by MREBBA

Chumthump

Verb. Posting and commenting on social media in a manner that is nonsensical and whimsically inflammatory.

Synonyms: Shit post; Troll

Portmanteau of "chum" (shark bait) and "tub-thump" (to take a strong position)

Originated on Threads

You can't take anything that guy posts seriously, he's just chumthumping.

Chumthump by MREBBA November 2, 2025