Nepicxo and Eks One specific objection to the i o proposal is that nepi o grandson is homonymous with ne pi o not musical pitch which in Esperanto slang can mean not a cunt I do nt understand the relevance of the bolded section This article is talking about an objection to i o The objection exists because nepi o resembles vulgar language not for sounding the same as musical pitch I think the bolded section should be which in Esperanto slang means Now about Eks Eks is also jokingly used in this sense eksvirkato castrated cat lit ex man cat vs katuko Wennergren Bertilo PMEG UK 12 12 08 I don t understand why it says jokingly used According to the PMEG this is an actual function of the root eks and it shows no indication of the usage being anything but accepted and serious