British Thoroughbred bay champion racehorse foaled in 1812 whose name, "son of a bitch" in Portuguese, was given by the owner of the Haras where it was born soon after he found out his wife was cheating him.
Hey, today I'm gonna bet on this horse with a weird name, "Filho da Puta".
It's often used as
"You're mom, bitch"
but this is incorrect, because puta means whore, where as
"Tu madre, perra"
would be okay, because perra means bitch.