Your idea is great, UKBlacknLong, but really your samples of ideas wouldnt really be realistic for someone wanting to keep the meaning of their tattoo discreet. And the whole black spade idea is great, if that's what someone wants...tho I would suggest not putting the word "Slut" in the middle of it since there will be need to explain why you have a tattoo saying slut on it to your family, friends, ect.
I've been a tattoo artist for going on almost eight years and never have I done a "black owned" type tattoo. Usually, if men "mark" their women, they prefer their names, initials, and have even done a guys thumb print on his girlfriends wrist.
Just remember that your tattoo is almost permanent. Laser removal is very expensive and even more painful than tattooing and usually having someone cover up is expensive as well. Take into account if it's something you're gonna be happy with for the rest of your life...a giant black spade is going to be next to impossible to cover. If you dont think you want to be labeled as a black dick slut when you're 90 then permanent tattooing probably is not for you. lol