JIAT Share definition Flag Acronym that stands for “Just Idiots and Trolls”. Often used to dismiss a body of comments or opinions from a toxic online community. Don’t waste time on YouTube comment sections, it’s JIAT. JIAT by Solveig Dae February 14, 2026 0 0 Get merch Get the JIAT mug. Buy Now — $32.95 See more merch