What does a tattoo with the ace of spades with a k in it mean?

The ace or king of spades are typically gang tattoos. I once worked for a tattooer transplanted from California, and he told me that the ace and king of spades are gang tattoos and should not be gotten by anybody who isn't looking for trouble. Same principal as not getting a 13 tattoo in the state of Ohio, as the PAGANS biker gang holds the number 13 in High regard, and would question and beat your ass should you have one tattooed on your person "just because".. But to answer your question more specifically, an ace of spades tattoo with a K inside of it symbolizes a gang member who has killed for his gang at least once.