In ancient Greece, one apparently common sentence visited upon adulterers was "radishment," which involved taking that radish and cramming it up the adulterer's ass. See,
The Clouds.
(For this quote, it's probably worth pointing out the distinction between the dainty salad radishes most Americans are familiar with and the hulking, fist-sized radish the Greeks used for punishment. Hence the term "broad arse," which appears to pull double duty as "adulterer" and "fat-ass.")
Just discourse: Suppose your pupil, following your advice, gets the radish rammed up his arse and then is depilated with a hot coal; how are you going to prove to him that he is not a broad-arse?
Unjust discourse: What's the matter with being a broad-arse?
Just discourse: Is there anything worse than that?
Unjust discourse: Now what will you say, if I beat you even on this point?
Just discourse: I should certainly have to be silent then.
Unjust discourse: Well then, reply! Our advocates, what are they?
Just discourse: Sons of broad-arses.
Unjust discourse: Nothing is more true. And our tragic poets?
Just discourse: Sons of broad-arses.
Unjust discourse: Well said again. And our demagogues?
Just discourse: Sons of broad-arses.
Unjust discourse: You admit that you have spoken nonsense. And the spectators, what are they for the most part? Look at them.
Just discourse: I am looking at them.
Unjust discourse: Well! What do you see?
Just discourse: By the gods, they are nearly all broad-arses.
See, this one I know to be such and that one and that other with the long hair.
Unjust discourse: What have you to say, then?
Just discourse: I am beaten. Debauchees! in the name of the gods, receive my cloak; I pass over to your ranks.
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Edit: can you think of a radical fat-assed bastard? I sure can.