[2] fatuis: especially used of silly speakers, and distinguished from insulsus by Donatus (ad Ter. Eun. 1079 “fatui sunt qui verbis et dictis fatui sunt; insulsi vero corde et animo” ); cf. Serv. ad Verg. A. 7.47 “fatuos dicimus inconsiderate loquentes” .
[4] carpatinas: a rude shoe made from a single piece of hide and apparently worn only by the lowest classes.
[5-6] si nos: etc., i. e. such is our just fear of being addressed by yout foul tongue that you have only to open your mouth to see us immediately drop dead.
[5-6] omnino: out-and-out; modifying not omnes, but perdere; cf. v. 6 omnino efficies (but Cic. Invent. 86 “omnino imnis argumentatio” ).