The vocative Ἀρίστυλλος (Aristyllus) is here used as a generic term for a glutton or someone who eats with their mouth open, derived from the character's reputation in comedy (or perhaps a specific, now obscure, historical figure known for this trait) rather than a specific individual present in the scene. The participle ὑποχάσκων (gaping/yawning) modifies the action of speaking, creating a vivid image of someone eating and talking simultaneously, which is a standard comic trope for the 'gluttonous slave' or 'fool', yet the specific lexical choice of ὑποχάσκων for 'eating while speaking' is a notable example of Aristophanic onomatopoeia and physical comedy that relies on the audience's recognition of the specific bodily function being mocked.