A kid (usually of mexican descent) that when is asked to speak spanish they reply with you guessed it... "yo no sabo". One of the worst kind of Mexican disgraces known to man.
Hispanic Mom: Hey Edgar, contestame en español.
Edgar: "Yo no sabo"
Hispanic Mom: Salte de mi casa. AHORITA CHINGADA MADRE!!
Ex. Edgar your such a yo no sabo kid.
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