vampire bite
n.— «The neck piercing is usually done off to one side of the neck and most commonly referred to as “vampire bites.” These are done with a surface bar and if done correctly, have a lower rate of rejection. When the piercing is removed, two small holes are left, mimicking a “vampire bite.”» —“Common Surface Piercings” by Jennifer Gittins Suite101 May 27, 2009. (source: Double-Tongued Dictionary)