KSI released Thick of It in 2024, and its instantly recognisable chorus quickly became a template for online parodies. The brainrot version keeps that hook but replaces the original lyrics with references to viral internet characters and slang, turning a mainstream pop-rap song into an in-joke for meme audiences. It spread through short-form video edits, where creators paired the catchy melody with chaotic clips and ironic captions. Its appeal lies in that familiarity: listeners recognise the song immediately, then laugh at how completely the meaning has been rewritten.