Of course, the blood and plasma oozing from the wounds do not paint an appealing picture, so prepare yourself beforehand for this experience.
There is only so much anatomy and science involved in this.
It is closer to the bone there is hardly any fat and muscle around here and relatively less skin on your ribs.
You will feel the force of a blunt metal object trying to create tiny cuts on your skin.
There is a relation of the amount of agony you will suffer and the location of the tattoo.
Not all tattoos because the same degree of pain and not all people similarly feel pain.