Themsta Share definition Flag Someone who’s non-binary or gender fluid that is a sista, or brotha, but gender neutral. Or just for shits and giggles. Similar to “Thueen” You got it themsta (sista or brotha) Themsta by chcikenbutt April 16, 2022 0 0 Get merch Get the Themsta mug. Buy Now — $32.95 See more merch