γυμνοσοφιστεία

From LSJ

ἀλλ' οὐκ ἂν μαχέσαιτο· χέσαιτο γάρ, εἰ μαχέσαιτο → fighting is what she can't do, for if she should fight she would shit

Source

Wikipedia EN

Gymnosophy (from Greek γυμνός gymnós "naked" and σοφία sophía "wisdom") was a movement and a philosophy practiced in Europe and the US from the end of the 19th century to the mid 20th century. The practice involved nudity, asceticism, and meditation.