"Pyo" is a word that an adult female who frequents forums, constantly, uses in place of "Stop" when typing a message. It's considered a Very Annoying "Catch Phrase" anywhere the user goes.
Piyoko: Mine was a hundred bucks, it could have been cheaper, but I didn't feel like waiting for shipping, and wanted a nicer one, pyo.
PYO. uk /ˌpi .waɪˈəʊ/ us /ˌpi .waɪˈoʊ/ abbreviation for "pick your own", used in signs outside farms where people can pick fruit and vegetables themselves and then pay for the amount they have picked.
(From Cambridge dictionary)