The name blends Gangnam Style, the 2012 hit by South Korean singer PSY, with shart slang for an embarrassing accident. PSY's song became one of the first truly global viral dance crazes, so its beat and moves are still instantly parodied online. Gamnamshart keeps that recognition but swaps cool confidence for toilet humour, a formula shared with other crude edits like fart with reverb. Short parody clips like this survive because viewers need no setup, they hear the reference, expect the dance, and get the gross twist instead.