South Park is still really popular. Many people have gotten some amazing South Park tattoos. I have seen them on men and women. There are a ton of ideas because of all of the outstanding characters.
I personally think they look best in color. Cartman is the most popular.
Many people love the Christmas season so much that they get tattoos inspired by the holiday. I have seen everything from Santa, snow, The Grinch and more. Men and woman have gotten these awesome tattoos. Just try and be original. Get a good artist to do it.