K. Dover, Aristophanes Frogs, Oxford, 1993, p. 270: «One of the three who appear now, Pardokas, has a comic name, for παρδείν is the aorist of πέρδεσθαι "fart" ; "Spartokos" was a name recurring in the royal house of the Crimean Bosporus (e.g. D.S. xii.31.1
The supposed /sp/ -> /p/ development...