Genre and place in the book. A textbook specimen of the exercise of EXERCISEphysical definition — the "bare" view that strips a thing down to its material. The principal discipline is assent (the handling of the TERMimpression); the sustaining one is desire (removing the false value from objects of craving).
The bare definitions. A run of famous "strippings": meat is a "corpse" (νεκρός) of a fish, a bird, a pig; Falernian is "a little juice of a grape" (χυλάριον σταφυλίου); the purple border is sheep's wool soaked in the blood of a shellfish; coitus is "a rubbing of a gut" and a discharge of mucus with a spasm. The diminutives (χυλάριον, τριχία, μυξάριον) lower the pathos and make the definition soberly, almost squeamishly exact — yet this is not Cynic disgust but precise categorisation: the thing is placed in its proper class.
The method (the impression that reaches things). "Such are these TERMimpressions — they reach the things themselves and pass through them, so that one sees what they really are." This is the Stoic doctrine of the φαντασία put to therapeutic use: to a thing one applies a "bare" impression, stripped of its social-evaluative drapery. And this must be done "all through life" (παρ' ὅλον τὸν βίον) — not a single gesture but a constant hygiene of judgment. Cf. 03-11 (the method of definition), 8.49 ("add nothing to what the φαντασία announces").
Conceit the deceiver (τῦφος). The climax is a warning: "conceit (τῦφος) is a formidable deceiver (παραλογιστής), and just when you are most sure you are busy with serious things (σπουδαῖα), that is when it most bewitches you." The most dangerous self-deception lies not in gross pleasures but in what we revere: fame, rank, "serious affairs" also need unmasking. τῦφος is the Stoic-Cynic word for "puffed-up show," an empty halo.
Crates and Xenocrates. The closing allusion (dropped by Rogovin, along with the sentence on τῦφος): "consider what Crates says of Xenocrates himself." Crates was a Cynic, a master of the deflating jibe; Xenocrates, head of the Academy, a model of austerity and incorruptibility. The point is that even the "most serious" and venerable is open to the Cynic's unmasking optics: τῦφος reaches the virtuously-weighty too. (The specific saying of Crates is not preserved — one cannot be more precise.)
Disciplines and parallels. The principal one is assent (the bare impression); the secondary is desire (removing the seduction from food, wine, luxury, sex). Parallels: 03-11 (the method of definition, its value and composition); 02-02 (the definition of man, the flesh as "slime"); 04-41 (the body as a "corpse," after Epictetus); Med. 8.49; 7.29 ("wipe out the impressions").