It is generally a filipino curse literally meaning bitch mother or if used against somebody as a curse like " putang ina mo" means you're mother is a bitch or son of a bitch. Usually used when ones gets really mad with somebody and wants to pick a fight
A "polite" way to tell someone he or she is a son of a bitch. This is because literally, it means "Your mother is a bitch" which kind of makes you the victim child of a bitch. Still, it is a strong insult because we Filipinos love our mothers.
Is a complex word meant to express super strong and complex emotion typically to show rage, grief, and anger towards a singular being or a group of people.