At first I thought this tat was some sort of symbol from an ancient civilization. Then I thought it was some sort of bizarre, athletic field for a sport I had no idea existed. Now I think that this person was barefoot when they stepped on some odd, geographic doormat at their Nana's house and just said, 'You know what? I am going to turn this into a tattoo. AND make it yellow. Just to mess with people."
This is an Ouroboros, which refers to the ancient mystical symbol representing a dragon devouring its own tail. It represents the eternal cycle of life and death. Honestly, when I first saw it, I thought it was a Beyblade.