At one point in Endwalker's development, most of Final Fantasy 14's characters were reviving a beloved community meme.
"Thal's bloody balls!" is, if you're unaware, one of the few versions of swearing in Final Fantasy 14. You're not exactly going to hear Thancred Waters or any other high fantasy characters outright swearing in Square Enix's MMO, so "Thal's bloody balls!" instead serves as a funky little line of frustration that characters can use for outbursts of rage.
