Originally Posted by MrSelfDestruct

If your tongue is pierced and you're going down on a girl with piercing, if the two pieces of jewelry are different types of metal (different coatings) the acidic environment from both your saliva and her juices will create just a tiny bit of elecrical current and can cause almost instant orgasm. Same goes if the ring touches the zipper of her pants if she's going commando and there's any moisture present. I hear it feels quite nice.