It's a liquor store franchise located in Mexico and in some parts of South America. It's known for their crazy-ass Tecate Light promotions.
Some of them open 24 hours, some of them don't.
Guy 1: Vamos al Oxxo antes que sean las doce
Guy 2: Si. Si llegamos al Oxxo despues de las doce, ya no nos venderan cerveza.