Tattoos can be a good way of showing who you are. And Anuses are a place where shit comes from. Together, this is what that looks like. I'm not even sure if these pics count as NSFW, but, just don't...
Just as every man, when they get the chance to, draw a dick and balls wherever they are, every woman, at some point in their lives when someone has a camera, decides "I'm going to shove this bottle in my mouth." Here's a gallery of them.