The phrase “chingatumaga pendejo” is a combination of Spanish slang terms. “Chingatumaga” is a vulgar expression that loosely translates to something like “f*** your mother,” while “pendejo” is a term that can mean “fool” or “idiot.” Together, the phrase is an insult, expressing strong disdain or contempt towards someone. It is important to note that this type of language is considered offensive and disrespectful.