"Pinche" is not an SPANISH slang, it is a MEXICAN slang, which means that only mexicans use it. So not every spanish-castilian speaking contries recognize this word besides that they all know that again, it is used by MEXICANS.
It is a term that means, asshole, idiot, or useless person, objects or uncofortable situations.
charro (or mexican): la pinche motocicleta no enciende.
mexican: orale me pican las pinches pelotas guey
colombian: perdon?? (excuse me?)
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