Is a song from the best punk band in Guatemala, Los Hijos De Se Madre. PxUxTxAx, is a full violence punk song. PUTA (in spanish) sometimes is used as an expression of anger, and that's the way is use in this song..
when you are mad at someone or something, or something bad happens, we say: "LA GRAN PUTA".. In english could be as "fuck" in the way of an expression of anger or when someting bad happens.