In the first photo, there is no piercing hole on the front part of her tongue. So why is there no blood when nails are hammered down? I have trouble understanding this trick.

In the first photo, there is no piercing hole on the front part of her tongue. So

In the first photo, there is no piercing hole on the front part of her tongue. So why is there no blood when nails are hammered down? I have trouble understanding this trick.

Yea X