Swollen erectiveness of the
nipple (or nipples) due to physical (or in some cases, mental) stimulation such as; licking, flicking, biting, sucking, freezing, burning (candle wax), piercing, applying anything mentholated, slamming in a door, stretching because you used them to hang
heavy objects from, etc. Shredding of one's upper garments, damage to glass and accidental injury to others are common due to the knifelike nature of the affected
nipple.