Genital piercing
The frenulum connects the foreskin to the shaft of the penis. This is an easy piercing to do. The reasons are the same as with the other piercings above. The name of the piercing is often shortened to a frenum piercing. If there are several piercings, the name is a frenum ladder or a Jacob's Ladder. (That name comes from a dream Jacob in the bible had of a ladder going to heaven.)