The origin of these chant is uncertain but some people track it some decades ago. When students of National Autonomous University of México, back in the 40´s escape from classes to go to the Goya (painter) cinema that was located near University, they were shouting these words. In these audio we can hear Chivas supporters changing the real words of the chant to give it an offensive meaning, they sing these in matches against Pumas
Lyrics
¡Goya!, ¡goya!, F*ck your mother, F*ck your mother, ¡Goya!, Your f*cking mother...