Where did the term migajero come from and why has it become popular on the Internet?

What does crumb/migajer mean? The term migajero and migajera has emerged in Mexico for several decades. Surely, you have heard that your mom or your aunts occupy it to refer to specific situations but lately it has been adopted by the younger generations, who have maximized its use to refer to everyday situations, social events and mostly to loving relationships. Generally, it is used in a derogatory tone to refer to someone who seeks profit or …