A local Latino supermarket chain is advertising "Costillas de Puerco para Freir". They are pork ribs and are sold as a rack and look like your standard BBQ ribs. Are ribs fried in Mexico? Perhaps slowly fried in lard like carnitas? Or maybe there is a better translation to "para Freir"?
The only other times I've hard fried ribs were as "salt and pepper spare ribs" but those were cut into riblets. The picture in the ad shows the ribs left whole, perhaps in sections of 3 ribs. For those in the SF Bay Area, it is in this week's Mi Pueblo circular (Jan 22-28).