Thiccthighsism Share definition Flag The Religion of thicc (thick) thighs! Me: Can I introduce you to my religion; Thiccthighsism? You: where do I sign up? Thiccthighsism by HoodLemon February 7, 2019 0 0 Get merch Get the Thiccthighsism mug. Buy Now — $32.95 See more merch