Texas small Share definition Flag A shirt size. In the North it is referred to as "6XL" or "XXXXXXL". Named so because of the massive size of some Texans. Guy: What size shirt do you wear? Fat girl: Small. Guy: Small?! Fat girl: Texas small ;) Texas small by Vulpes_Inculta September 26, 2012 0 0 Get merch Get the Texas small mug. Buy Now — $32.95 See more merch