ThinArse Share definition Flag A clever name to call Thanos when his gym card expired. Person: Ayo look wut hapen to mah boi thanos, or should i say ThinArse. ThinArse by JoeMamaBiden20202020 July 17, 2022 0 0 Get merch Get the ThinArse mug. Buy Now — $32.95 See more merch