A Brutal Slasher Story - Please Add On To This

Before you allow John to get to orgasm you decided to pull back and add in a bit more foreplay to tease him. This is a great way to torture him, and make the experience last alot longer. As you pull your head back away from his cock a string of saliva goes from his penis head to your lips. You pull yourself up to above his crotch and start licking his stomach, while slowly licking up his abs.
His abs are more skinny abs then fitness abs, as he is more of the lazy stoner type but he still turns you on none the less. You want to enjoy the taste of his body, so you make your trip to his nipples a slow one,teasing him along the way.

You are now close to the nipples and you have a choice. One nipple is peirced with a nipple ring, where the other has no peircing. What do you do?