In Spanish the word is frijolero, the roughest translation is beaner. This is because frijol means beans and the ero at the end refers to someone with beans. In Spanish we use the word to mean the dude who sells beans. Like elotero, the corn seller or carnicero, the meat seller.

Yes it’s used as a slur in English, that doesn’t change the origins, if anything it further contextualizes how cruel it is. When beans are the consistent source of protein for many Mexicans. Without them, most of the country would be malnourished.

Then again, I’m just a frijolero :)