The scope of the Inquisition, believed that the devil left a mark in the eye of his possible acolytes. The mark was " tutía ". When the zealous inquisitors very carefully inspected the eyes of suspected of witchcraft, they were not the brand, they shouted: there is No Tutía!, which meant the immediate release of the reo wretched.
Also atutía, from the Spanish Arabic attutiyya, traditional medicine in the form of ointment for the eyes, made with zinc oxide from chimneys and ovens. Over time it came to mean remedy for something like in the expression "there is no tutía" and also "there is no your aunt", there is no solution to some difficulty or problem impossible to solve.